CN103155346A - Circuit for balance-charging serial storage cells and method for balance-charging serial storage cells - Google Patents

Circuit for balance-charging serial storage cells and method for balance-charging serial storage cells Download PDF

Info

Publication number
CN103155346A
CN103155346A CN2012800031757A CN201280003175A CN103155346A CN 103155346 A CN103155346 A CN 103155346A CN 2012800031757 A CN2012800031757 A CN 2012800031757A CN 201280003175 A CN201280003175 A CN 201280003175A CN 103155346 A CN103155346 A CN 103155346A
Authority
CN
China
Prior art keywords
mentioned
electricity accumulating
accumulating unit
switch
connecting valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN2012800031757A
Other languages
Chinese (zh)
Other versions
CN103155346B (en
Inventor
相浦正巳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Asahi Kasei Microdevices Corp
Original Assignee
Asahi Kasei EMD Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Asahi Kasei EMD Corp filed Critical Asahi Kasei EMD Corp
Publication of CN103155346A publication Critical patent/CN103155346A/en
Application granted granted Critical
Publication of CN103155346B publication Critical patent/CN103155346B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H02J7/04—Regulation of charging current or voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0014—Circuits for equalisation of charge between batteries
    • H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

A coil for introducing an electrical charge to serial cells and a coil for balancing the voltage between the cells are shared, making the overall configuration of a circuit more compact. A coil is provided so as to be shared by first and second storage cells. One of the storage cells is charged upon a coil being electrically connected thereto, whereupon the other storage cell is charged upon the coil being electrically connected thereto. A plurality of switches for switching the path of a charging current flowing to the coil are provided. In a first charging period, there is formed a path over which the charging current flows to a reference voltage via the coil. In a second charging period, there is formed a path over which the charging current flows from the coil to the second cell. In a third charging period, there is formed a path over which the charging current flows to a reference voltage via the coil. In a fourth charging period, one end of the coil and one end of the first cell are conductively connected, the other end of the coil and the other end of the first cell are conductively connected, and a path of the charging current flowing from the coil to the first cell is formed.

Description

The balance charging method of the equilibrium charging circuit of series connection electricity accumulating unit, series connection electricity accumulating unit
Technical field
The present invention relates to a kind of equilibrium charging circuit of the electricity accumulating unit of connecting, the balance charging method of series connection electricity accumulating unit.
Background technology
The electricity accumulating unit such as secondary cell, electric capacity (hereinafter referred to as the unit) is connected in series to use mostly.When units in series is connected, the voltage at the two ends of series unit uprises, therefore when series unit being made as single module, when namely being made as single encapsulation, for the power supply with low-voltage charges to series unit, need to having used the charging circuit of the booster type of inductor etc.Charging circuit 503 in Figure 109 is charging circuits of general known series unit in the past.
Charging circuit 503 possesses coil (inductor) L1, switch S 1, switch S 2 and charging control circuit Control5, input terminal 501 is connected with the end of coil L1, lead-out terminal 502 is connected with an end of switch S 1, and the reference voltage terminal is connected with an end of switch S 2.And the other end that the other end of switch S 1 is connected with switch S is connected with the other end of coil L1.In addition, the charging break-make of control circuit Control5 control switch S1 and switch S 2.And an end of switch S 1 is connected with series unit.
Use control circuit Control5 to come turn on-switch S2 by charging.And, by input terminal 501 input input voltage vin, will accumulate coil L1 for the charging current that electric charge is filled with series unit.
Then, use control circuit Control5 to come cut-off switch S2 and turn on-switch S1 by charging.And, by the charging current that is filled with coil L1, electric charge is filled with series unit.
Like this, can charge to series unit.
In addition, because causing the capacitance of electricity accumulating unit, manufacturing process produces deviation.
In this case, when the capacitance between series unit has deviation, produce the voltage deviation between series unit after charging.When producing voltage deviation, voltage concentrates on a unit of series unit, generation time such problem that shortens.In order to address this problem, the known balance of voltage correcting circuit (unit balancing circuitry) (for example, with reference to patent documentation 1) that the series unit of the balance that voltage equalization with each unit of series unit keeps voltage is arranged.
Unit balancing circuitry 504 in Figure 109 is the described unit balancing circuitrys in the past of patent documentation 1.
Unit balancing circuitry 504 possesses coil L2, switch S 3, switch S 4, unit Cell1, unit Cell2 and unit balance control circuit Control6.Unit Cell1 and unit Cell2 are connected in series, and a side of series connection end is connected with lead-out terminal 502, the opposing party and reference voltage terminal sub-connection.And, unit Cell1 is connected contact and is connected with the end of coil L2 with unit Cell2, lead-out terminal 502 is connected with an end of switch S 3, and the reference voltage terminal is connected with an end of switch S 4, and the other end that the other end of switch S 3 is connected with switch S is connected with the other end of coil L2.In addition, the unit balance break-make of charging circuit Control6 control switch S3 and switch S 4.
Come turn on-switch S4 by the unit balance with control circuit Control6.And, make being used in the electric charge that is filled with in unit Cell2 keep the electric current of the balance of the voltage between series unit to flow to coil L2 and accumulate charging current.
Then, come cut-off switch S4 and turn on-switch S3 by the unit balance with control circuit Control6.And, by the charging current that is filled with coil L2, electric charge is filled with unit Cell1, keep the balance of the voltage between series unit.
As described above, charging circuit and unit balancing circuitry need respectively a coil.
When having above-mentioned charging circuit and unit balancing circuitry both sides concurrently, become series unit is charged and keeps the equilibrium charging circuit of series unit of balance of the voltage of each unit.
The integral body of Figure 109 means the figure of the equilibrium charging circuit of series unit in the past.The equilibrium charging circuit of series unit in the past is made of the unit balancing circuitry 504 of the charging circuit 503 that series unit is charged and the balance of the voltage that keeps each unit.
Charging circuit 503 possesses coil (inductor) L1, switch S 1, switch S 2 and charging control circuit Control5, input terminal 501 is connected with the end of coil L1, lead-out terminal 502 is connected with an end of switch S 1, and the reference voltage terminal is connected with an end of switch S 2.And the other end that the other end of switch S 1 is connected with switch S is connected with the other end of coil L1.In addition, the charging break-make of control circuit 503 control switch S1 and switch S 2.
Unit balancing circuitry 504 possesses coil L2, switch S 3, switch S 4, unit Cell1, unit Cell2 and unit balance control circuit Control6, unit Cell1 and unit Cell2 are connected in series, lead-out terminal 502 is connected with a side of series connection end, and the reference voltage terminal is connected with the opposing party.And, unit Cell1 is connected contact and is connected with the end of coil L2 with unit Cell2, lead-out terminal 502 is connected with an end of switch S 3, and the reference voltage terminal is connected with an end of switch S 4, and the other end that the other end of switch S 3 is connected with switch S is connected with the other end of coil L2.In addition, the unit balance break-make of control circuit Control6 control switch S3 and switch S 4.
Figure 110～Figure 113 is the figure for the action of the equilibrium charging circuit of explanation series unit in the past.
At first, use control circuit Control5 to come turn on-switch S2 by charging.Then, input input voltage vin by input terminal 501, accumulate in coil L1 for electric charge being filled with the charging current of series unit.The path of charging current represents with the dotted arrow of Figure 110.
Then, use control circuit Control5 to come cut-off switch S2 and turn on-switch S1 by charging.Then, the charging current that is filled with coil L1 is filled with series unit.The path of charging current represents with the dotted arrow of Figure 111.
With above-mentioned charging with the action of control circuit Control5 abreast, come turn on-switch S4 by the unit balance with control circuit Control6.Then, make being used in the electric charge that is filled with unit Cell2 keep the electric charge of the balance of the voltage between series unit to flow to coil L2 and accumulate charging current.The path of charging current represents with the dotted arrow of Figure 112.
Then, come cut-off switch S4 and turn on-switch S3 by the unit balance with control circuit Control6.Then, the charging current that is filled with coil L2 is filled with the balance that unit Cell1 keeps the voltage between series unit.The path of charging current represents with the dotted arrow of Figure 113.
In the equilibrium charging circuit of in the past series unit, like this electric charge is filled with series unit and keeps the balance of the voltage between series unit, obtain output voltage V out from lead-out terminal 502.
Patent documentation 1: TOHKEMY 2008-17605 communique
Summary of the invention
The problem that invention will solve
Yet there are the following problems in the equilibrium charging circuit of in the past patent documentation 1 described series unit.In the equilibrium charging circuit of in the past series unit, need to be used for electric charge is filled with a coil of series unit and is used for keeping a coil of the balance of the voltage between series unit to add up to two coils.That is, the scale of comparing coil with the parts such as switch is large, therefore exists multiplex coil to cause the such problem of maximization of circuit integral body.
In addition, keep the balance of the voltage between series unit for the equilibrium charging circuit of using series unit in the past, as reference Figure 109 describes, charging circuit need to be set in addition.That is to say, via utilize this charging circuit charge after (with reference to Figure 110, Figure 111) keep the action in two such stages of the balance (with reference to Figure 112, Figure 113) of the voltage between series unit to keep the balance of the charging voltage between series unit by the action of balancing circuitry.Like this, also need to arrange charging circuit except the equilibrium charging circuit, existing causes the whole such problem that maximizes of circuit.
The present invention makes in view of above-mentioned point, and its purpose is to provide a kind of and can electric charge be filled with the coil of series unit with being used for and be used for keeping coil sharedization of the balance of the voltage between series unit namely to be realized by a coil and the equilibrium charging circuit of the less series connection electricity accumulating unit of the structure of circuit integral body, the balance charging method of the electricity accumulating unit of connecting.
The equilibrium charging circuit of the series connection electricity accumulating unit that an embodiment of the invention are related is to being connected in series and a side of the end of connecting is connected with lead-out terminal and the first electricity accumulating unit and the second electricity accumulating unit that the opposing party is connected with reference voltage carry out equilibrium charging, the equilibrium charging circuit of this series connection electricity accumulating unit is characterised in that, comprise: coil, it is configured to be shared by above-mentioned the first electricity accumulating unit and above-mentioned the second electricity accumulating unit, for above-mentioned the first electricity accumulating unit and above-mentioned the second electricity accumulating unit are charged and the electric power that provides from power supply is provided provisionally; And switch portion, it is used for a side of above-mentioned the first electricity accumulating unit and above-mentioned the second electricity accumulating unit and above-mentioned coil are electrically connected to fetch charging, and afterwards the opposing party in above-mentioned the first electricity accumulating unit and above-mentioned the second electricity accumulating unit and above-mentioned coil is electrically connected to fetch and charges.By adopting this structure, do not need to arrange a plurality of coils, can be made as the structure of equilibrium charging circuit integral body less.
what wish is, in the equilibrium charging circuit of above-mentioned series connection electricity accumulating unit, above-mentioned switch portion is made of a plurality of switches that the path of the charging current of the above-mentioned coil of flowing through is switched, the equilibrium charging circuit of this series connection electricity accumulating unit also possesses control circuit, this control circuit is controlled the break-make of above-mentioned a plurality of switches, repeatedly setting will be filled with between the first charge period of above-mentioned coil for the charging current that above-mentioned second unit is charged in order, the charging current that is filled into above-mentioned coil is filled with between the second charge period of above-mentioned second unit, to be filled with between the 3rd charge period of above-mentioned coil and the charging current that will be filled into above-mentioned coil is filled with between the 4th charge period of above-mentioned first module for the charging current that above-mentioned first module is charged, the break-make of the above-mentioned a plurality of switches of above-mentioned control circuit control forms the path that flows to the charging current of said reference voltage by above-mentioned coil in making between above-mentioned the first charge period, in making between above-mentioned the second charge period, the break-make of controlling above-mentioned a plurality of switches forms the path that flows to the charging current of above-mentioned second unit from above-mentioned coil, in making between above-mentioned the 3rd charge period, the break-make of controlling above-mentioned a plurality of switches forms the path that flows to the charging current of said reference voltage by above-mentioned coil, the break-make of controlling above-mentioned a plurality of switches makes an end of above-mentioned coil and an end conducting of above-mentioned first module in making between above-mentioned the 4th charge period, the other end conducting of the other end of above-mentioned coil and above-mentioned first module forms the path that flows to the charging current of above-mentioned first module from above-mentioned coil.By adopting this structure, do not need to arrange a plurality of coils, can be made as the structure of equilibrium charging circuit integral body less.
can be also that above-mentioned a plurality of switches comprise: the first switch, the one end be connected above-mentioned first module and be connected the contact of second unit and connect, second switch, the one end is connected with input terminal, the 3rd switch, the one end is connected with said reference voltage, the 4th switch, the one end is connected with above-mentioned lead-out terminal, the 5th switch, the one end is connected with said reference voltage, and the 6th switch, the one end be connected above-mentioned first module and be connected the contact of second unit and connect, an end of above-mentioned coil and the other end of above-mentioned the first switch, the other end of above-mentioned second switch, the other end of above-mentioned the 3rd switch connects, the other end of the other end of above-mentioned coil and above-mentioned the 4th switch, the other end of above-mentioned the 5th switch, the other end of above-mentioned the 6th switch connects, above-mentioned control circuit between above-mentioned the first charge period in the above-mentioned second switch of connection and above-mentioned the 6th switch, disconnect above-mentioned the first switch, above-mentioned the 3rd switch, above-mentioned the 4th switch and above-mentioned the 5th switch are connected above-mentioned the 3rd switch and above-mentioned the 6th switch between above-mentioned the second charge period, disconnect above-mentioned the first switch, above-mentioned second switch, above-mentioned the 4th switch and above-mentioned the 5th switch are connected above-mentioned second switch and above-mentioned the 5th switch between above-mentioned the 3rd charge period, disconnect above-mentioned the first switch, above-mentioned the 3rd switch, above-mentioned the 4th switch and above-mentioned the 6th switch are connected above-mentioned the first switch and above-mentioned the 4th switch between above-mentioned the 4th charge period, disconnect above-mentioned second switch, above-mentioned the 3rd switch, above-mentioned the 5th switch and above-mentioned the 6th switch.By adopting this structure, do not need to arrange a plurality of coils, can be made as the structure of equilibrium charging circuit integral body less.
in addition, can be also that above-mentioned a plurality of switches comprise: the first switch, the one end be connected above-mentioned first module and be connected the contact of second unit and connect, second switch, the one end is connected with input terminal, the 3rd switch, the one end is connected with said reference voltage, the 4th switch, the one end is connected with above-mentioned lead-out terminal, the 5th switch, the one end is connected with said reference voltage, and the 6th switch, the one end be connected above-mentioned first module and be connected the contact of second unit and connect, an end of above-mentioned coil and the other end of above-mentioned the first switch, the other end of above-mentioned second switch, the other end of above-mentioned the 3rd switch connects, the other end of the other end of above-mentioned coil and above-mentioned the 4th switch, the other end of above-mentioned the 5th switch, the other end of above-mentioned the 6th switch connects, above-mentioned control circuit between above-mentioned the first charge period in the above-mentioned second switch of connection and above-mentioned the 5th switch, disconnect above-mentioned the first switch, above-mentioned the 3rd switch, above-mentioned the 4th switch and above-mentioned the 6th switch are connected above-mentioned the 3rd switch and above-mentioned the 6th switch between above-mentioned the second charge period, disconnect above-mentioned the first switch, above-mentioned second switch, above-mentioned the 4th switch and above-mentioned the 5th switch are connected above-mentioned second switch and above-mentioned the 5th switch between above-mentioned the 3rd charge period, disconnect above-mentioned the first switch, above-mentioned the 3rd switch, above-mentioned the 4th switch and above-mentioned the 6th switch are connected above-mentioned the first switch and above-mentioned the 4th switch between above-mentioned the 4th charge period, disconnect above-mentioned second switch, above-mentioned the 3rd switch, above-mentioned the 5th switch and above-mentioned the 6th switch.By adopting this structure, do not need to arrange a plurality of coils, can be made as the structure of equilibrium charging circuit integral body less.
can be also that above-mentioned a plurality of switches comprise: the first switch, the one end is connected with above-mentioned lead-out terminal, second switch, the one end is connected with input terminal, the 3rd switch, the one end is connected with said reference voltage, the 4th switch, the one end is connected with above-mentioned input terminal, and the 5th switch, the one end be connected above-mentioned first module and be connected the contact of second unit and connect, one end of above-mentioned coil and the other end of above-mentioned the first switch, the other end of above-mentioned second switch, the other end of above-mentioned the 3rd switch connects, the other end of the other end of above-mentioned coil and above-mentioned the 4th switch, the other end of above-mentioned the 5th switch connects, above-mentioned control circuit is connected above-mentioned second switch and above-mentioned the 5th switch between above-mentioned the first charge period, disconnect above-mentioned the first switch, above-mentioned the 3rd switch and above-mentioned the 4th switch, connect above-mentioned the 3rd switch and above-mentioned the 5th switch between above-mentioned the second charge period, disconnect above-mentioned the first switch, above-mentioned second switch and above-mentioned the 4th switch, connect above-mentioned the 3rd switch and above-mentioned the 4th switch between above-mentioned the 3rd charge period, disconnect above-mentioned the first switch, above-mentioned second switch and above-mentioned the 5th switch, connect above-mentioned the first switch and above-mentioned the 5th switch between above-mentioned the 4th charge period, disconnect above-mentioned second switch, above-mentioned the 3rd switch and above-mentioned the 4th switch.By adopting this structure, therefore the number that does not need that a plurality of coils are set and can cut down switch can be made as the structure of equilibrium charging circuit integral body less.
can be also that above-mentioned a plurality of switches comprise: the first switch, the one end is connected with above-mentioned lead-out terminal, second switch, the one end is connected with input terminal, and the 3rd switch, the one end is connected with said reference voltage, one end of above-mentioned coil and the other end of above-mentioned the first switch, the other end of above-mentioned second switch, the other end of above-mentioned the 3rd switch connects, the other end of above-mentioned coil be connected above-mentioned first module and be connected the contact of second unit and connect, above-mentioned control circuit is connected above-mentioned second switch between above-mentioned the first charge period, disconnect above-mentioned the first switch and above-mentioned the 3rd switch, connect above-mentioned the 3rd switch between above-mentioned the second charge period, disconnect above-mentioned the first switch and above-mentioned second switch, connect above-mentioned the 3rd switch between above-mentioned the 3rd charge period, disconnect above-mentioned the first switch and above-mentioned second switch, connect above-mentioned the first switch between above-mentioned the 4th charge period, disconnect above-mentioned second switch and above-mentioned the 3rd switch.By adopting this structure, therefore the number that does not need that a plurality of coils are set and can also cut down switch can be made as the structure of equilibrium charging circuit integral body less.
can be also that above-mentioned a plurality of switches comprise: the first switch, the one end is connected with above-mentioned lead-out terminal, second switch, the one end is connected with input terminal, and the 3rd switch, the one end is connected with said reference voltage, and the equilibrium charging circuit of this series unit also possesses: electric capacity, the one end is connected with said reference voltage, and diode, its negative electrode be connected above-mentioned first module and be connected the contact of second unit and connect, one end of above-mentioned coil and the other end of above-mentioned the first switch, the other end of above-mentioned second switch, the other end of above-mentioned the 3rd switch connects, the other end of above-mentioned coil and the other end of above-mentioned electric capacity, the anodic bonding of above-mentioned diode, above-mentioned control circuit is connected above-mentioned second switch between above-mentioned the first charge period, disconnect above-mentioned the first switch and above-mentioned the 3rd switch, connect above-mentioned the 3rd switch between above-mentioned the second charge period, disconnect above-mentioned the first switch and above-mentioned second switch, connect above-mentioned the 3rd switch between above-mentioned the 3rd charge period, disconnect above-mentioned the first switch and above-mentioned second switch, connect above-mentioned the first switch between above-mentioned the 4th charge period, disconnect above-mentioned second switch and above-mentioned the 3rd switch.By adopting this structure, therefore the number that does not need that a plurality of coils are set and can also cut down switch can be made as the structure of equilibrium charging circuit integral body less.
In addition, it is desirable for that above-mentioned control circuit is set between above-mentioned the second charge period and the time of the turn on-switch between above-mentioned the 4th charge period makes between above-mentioned the second charge period and when finishing between above-mentioned the 4th charge period the charging current of above-mentioned coil become zero.By adopting this structure, can eliminate the time of eliminating the residual current in coil when finishing between the second and the 4th charge period between the first and the 3rd charge period when beginning.And, can also prevent from flowing through the dead resistance of each element on current path between the first and the 3rd charge period and producing power consumption to the regenerative current of mains side.
the equilibrium charging circuit of the series connection electricity accumulating unit that other execution mode of the present invention is related to be connected in series and connect the end a side be connected with lead-out terminal and the first electricity accumulating unit to the N of the opposing party and reference voltage terminal sub-connection (N is the integer more than 2, down together) electricity accumulating unit carries out equilibrium charging, the equilibrium charging circuit of this series connection electricity accumulating unit is characterised in that, comprise: coil, it is configured to be shared by above-mentioned the first electricity accumulating unit to above-mentioned N electricity accumulating unit, the electric power that provides from the power supply that is connected with the input electronics for being charged, is provided above-mentioned the first electricity accumulating unit to the N electricity accumulating unit provisionally, more than first switch, it is used for above-mentioned coil is electrically connected between above-mentioned input terminal and said reference voltage, and more than second switch, it is used for two the bringing in and charge separately that two ends with above-mentioned coil are electrically connected to above-mentioned the first electricity accumulating unit to the N electricity accumulating unit.By adopting this structure, do not need to arrange a plurality of coils, can be made as the structure of equilibrium charging circuit integral body less.
what wish is, in the equilibrium charging circuit of above-mentioned series connection electricity accumulating unit, also possesses control circuit, this control circuit is with k (during the coil charges of 1＜=k＜=N) and be made as between the k charge period that above-mentioned k electricity accumulating unit is charged between k electricity accumulating unit charge period, come with between above-mentioned the first charge period of different order repeatedly setting between each charge period between the N charge period, wherein, this control circuit break-make of controlling above-mentioned more than first switch during this k coil charges be used for to the charging current that above-mentioned k electricity accumulating unit charges be filled with above-mentioned coil during, this control circuit break-make of controlling above-mentioned more than second switch between this k electricity accumulating unit charge period with the charging current that is filled into above-mentioned coil in during above-mentioned k coil charges be filled with above-mentioned k electricity accumulating unit during, form in the break-make of above-mentioned more than first switch of above-mentioned control circuit control makes during above-mentioned k coil charges and flow to the path of the charging current of said reference voltage terminal from above-mentioned input terminal by above-mentioned coil, in making between above-mentioned k electricity accumulating unit charge period, the break-make of controlling above-mentioned more than second switch forms the path that flows to the charging current of above-mentioned k electricity accumulating unit from above-mentioned coil.By adopting this structure, do not need to arrange a plurality of coils, can be made as the structure of equilibrium charging circuit integral body less.
It is desirable for that above-mentioned more than first switch comprises: the first coil connecting valve, the one end is connected with above-mentioned input terminal, and the other end is connected with an end of above-mentioned coil; And the second coil connecting valve, the one end is connected with the other end of above-mentioned coil, the other end is connected with the said reference voltage terminal, above-mentioned more than second switch comprises: the first electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve, the one end is connected with the downside separately of above-mentioned the first electricity accumulating unit to the N electricity accumulating unit, and the other end is connected with an end of above-mentioned coil; And first electricity accumulating unit upside connecting valve to the (N-1) the electricity accumulating unit upside connecting valve, the one end is connected with the upside separately of above-mentioned the first electricity accumulating unit to the (N-1) electricity accumulating unit, and the other end is connected with an end of above-mentioned coil.By adopting this structure, do not need to arrange a plurality of coils, can be made as the structure of equilibrium charging circuit integral body less.
can be also, above-mentioned control circuit is connected above-mentioned the first coil connecting valve and above-mentioned the second coil connecting valve in during above-mentioned k coil charges, disconnect above-mentioned the first electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve, disconnect above-mentioned the first coil connecting valve and above-mentioned the second coil connecting valve between above-mentioned k electricity accumulating unit charge period, connect above-mentioned k electricity accumulating unit downside connecting valve and above-mentioned k electricity accumulating unit upside connecting valve, disconnect above-mentioned k electricity accumulating unit downside connecting valve switch and the switch in addition of the above-mentioned k electricity accumulating unit upside connecting valve in above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve in addition in above-mentioned the second electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve.By adopting this structure, do not need to arrange a plurality of coils, can be made as the structure of equilibrium charging circuit integral body less.
can be also, above-mentioned control circuit is connected above-mentioned the first coil connecting valve and above-mentioned the second coil connecting valve between above-mentioned the first coil charge period, connect above-mentioned the first electricity accumulating unit upside connecting valve, disconnect above-mentioned the first electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve and above-mentioned the 3rd electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve, (connect above-mentioned the first coil connecting valve and above-mentioned the second coil connecting valve in during the coil charges of 2≤M≤N) at above-mentioned M, disconnect above-mentioned the first electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve and above-mentioned the 3rd electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve, disconnect above-mentioned the first coil connecting valve and above-mentioned the second coil connecting valve between above-mentioned M electricity accumulating unit charge period, connect above-mentioned M electricity accumulating unit downside connecting valve and above-mentioned M electricity accumulating unit upside connecting valve, disconnect above-mentioned M electricity accumulating unit downside connecting valve switch and the switch in addition of the above-mentioned M electricity accumulating unit upside connecting valve in above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve in addition in above-mentioned the first electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve.By adopting this structure, do not need to arrange a plurality of coils, can be made as the structure of equilibrium charging circuit integral body less.
can be also, above-mentioned control circuit is connected above-mentioned the first coil connecting valve between above-mentioned the first electricity accumulating unit charge period, connect above-mentioned the first electricity accumulating unit upside connecting valve, disconnect above-mentioned the second coil connecting valve, above-mentioned the first electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve and above-mentioned the second electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve, connect above-mentioned the first coil connecting valve and above-mentioned the second coil connecting valve in during above-mentioned M coil charges, disconnect above-mentioned the first electricity accumulating unit downside and be connected to N electricity accumulating unit downside connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve, in between above-mentioned M electricity accumulating unit charge period, disconnect above-mentioned the first coil connecting valve and above-mentioned the second coil connecting valve, connect above-mentioned M electricity accumulating unit downside connecting valve and above-mentioned M electricity accumulating unit upside connecting valve, disconnect above-mentioned M electricity accumulating unit downside connecting valve switch and the switch in addition of the above-mentioned M electricity accumulating unit upside connecting valve in above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve in addition in above-mentioned the first electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve.By adopting this structure, do not need to arrange a plurality of coils, can be made as the structure of equilibrium charging circuit integral body less.
Can be also, above-mentioned control circuit between above-mentioned the first coil charge period in, replace to connect above-mentioned the second coil connecting valve and connect above-mentioned the first electricity accumulating unit upside connecting valve.By adopting this structure, do not need to arrange a plurality of coils, can be made as the structure of equilibrium charging circuit integral body less.
can be also, above-mentioned control circuit is connected above-mentioned the first coil connecting valve and above-mentioned the second coil connecting valve in during above-mentioned k coil charges, disconnect above-mentioned the first electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve, connect above-mentioned the first coil connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve between above-mentioned the first electricity accumulating unit charge period, disconnect above-mentioned the second coil connecting valve, switch beyond above-mentioned the first electricity accumulating unit upside connecting valve in above-mentioned the first electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve, disconnect above-mentioned the first coil connecting valve and above-mentioned the second coil connecting valve between above-mentioned k (k 〉=2) electricity accumulating unit charge period, connect above-mentioned k electricity accumulating unit downside connecting valve and above-mentioned k electricity accumulating unit upside connecting valve, disconnect above-mentioned k electricity accumulating unit downside connecting valve switch and the switch in addition of the above-mentioned k electricity accumulating unit upside connecting valve in above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve in addition in above-mentioned the first electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve.By adopting this structure, do not need to arrange a plurality of coils, can be made as the structure of equilibrium charging circuit integral body less.
Can be also that above-mentioned more than first switch comprises: the first coil connecting valve, the one end is connected with above-mentioned input terminal, and the other end is connected with an end of above-mentioned coil; The second coil connecting valve, the one end is connected with the other end of above-mentioned coil, and the other end is connected with the said reference voltage terminal; The tertiary coil connecting valve, the one end is connected with above-mentioned input terminal, and the other end is connected with the other end of above-mentioned coil; And the 4th coil connecting valve, the one end is connected with an end of above-mentioned coil, the other end is connected with the said reference voltage terminal, above-mentioned more than second switch comprises: k (k is even number) electricity accumulating unit downside connecting valve, the one end is connected with the downside separately of above-mentioned the first electricity accumulating unit to the N electricity accumulating unit, and the other end is connected with an end of above-mentioned coil; And k (k is odd number) electricity accumulating unit upside connecting valve, the one end is connected with the upside separately of above-mentioned the first electricity accumulating unit to the (N-1) electricity accumulating unit, and the other end is connected with an end of above-mentioned coil.By adopting this structure, do not need to arrange a plurality of coils, can be made as the structure of equilibrium charging circuit integral body less.
can be also, above-mentioned control circuit is connected above-mentioned the first coil connecting valve and above-mentioned the second coil connecting valve in during above-mentioned k (k is odd number) coil charges, disconnect above-mentioned the first electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve, connect above-mentioned tertiary coil connecting valve and above-mentioned the 4th coil connecting valve in during above-mentioned k (k is even number) coil charges, disconnect above-mentioned the first electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve, connect above-mentioned k electricity accumulating unit upside connecting valve and above-mentioned (k+1) electricity accumulating unit downside connecting valve between above-mentioned k (k is odd number) electricity accumulating unit charge period, disconnect above-mentioned the first coil connecting valve to above-mentioned the 4th coil connecting valve, disconnect above-mentioned k electricity accumulating unit upside connecting valve switch and the switch in addition of above-mentioned (k+1) electricity accumulating unit downside connecting valve in above-mentioned the first electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve in addition in above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve, connect above-mentioned k electricity accumulating unit downside connecting valve and above-mentioned (k-1) electricity accumulating unit upside connecting valve between above-mentioned k (k is even number) electricity accumulating unit charge period, disconnect above-mentioned the first coil connecting valve to above-mentioned the 4th coil connecting valve, disconnect above-mentioned k electricity accumulating unit downside connecting valve switch and the switch in addition of above-mentioned (k-1) electricity accumulating unit upside connecting valve in above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve in addition in above-mentioned the first electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve.By adopting this structure, do not need to arrange a plurality of coils, can be made as the structure of equilibrium charging circuit integral body less.
Can be also, above-mentioned control circuit between above-mentioned the first coil charge period in, replace to connect above-mentioned the second coil connecting valve and connect above-mentioned the first electricity accumulating unit upside connecting valve.By adopting this structure, do not need to arrange a plurality of coils, can be made as the structure of equilibrium charging circuit integral body less.
Can be also, above-mentioned control circuit between above-mentioned the first electricity accumulating unit charge period in, replace to connect above-mentioned the 4th coil connecting valve and connect above-mentioned the first coil connecting valve.By adopting this structure, do not need to arrange a plurality of coils, can be made as the structure of equilibrium charging circuit integral body less.
Can be also that above-mentioned more than first switch comprises: the first coil connecting valve, the one end is connected with above-mentioned input terminal, and the other end is connected with an end of above-mentioned coil; The tertiary coil connecting valve, the one end is connected with above-mentioned input terminal, and the other end is connected with the other end of above-mentioned coil; And the 4th coil connecting valve, the one end is connected with an end of above-mentioned coil, the other end is connected with the said reference voltage terminal, above-mentioned more than second switch comprises: the 3rd electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve, the one end is connected with the downside separately of above-mentioned the 3rd electricity accumulating unit to the N electricity accumulating unit, and the other end is connected with an end of above-mentioned coil; And first electricity accumulating unit upside connecting valve to the (N-1) the electricity accumulating unit upside connecting valve, the one end is connected with the upside separately of above-mentioned the first electricity accumulating unit to the (N-1) electricity accumulating unit, and the other end is connected with an end of above-mentioned coil.By adopting this structure, do not need to arrange a plurality of coils, can be made as the structure of equilibrium charging circuit integral body less.
can be also, above-mentioned control circuit is connected above-mentioned the first coil connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve between above-mentioned the first coil charge period, connect above-mentioned tertiary coil connecting valve and above-mentioned the 4th coil connecting valve in during the N coil charges during above-mentioned the second coil charges, disconnect above-mentioned the 3rd electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve, connect above-mentioned the 4th coil connecting valve between above-mentioned the first electricity accumulating unit charge period, connect above-mentioned the first electricity accumulating unit upside connecting valve, disconnect above-mentioned the first electricity accumulating unit upside connecting valve switch in addition in above-mentioned the 3rd electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve, disconnect above-mentioned the first coil connecting valve between above-mentioned k (k 〉=2) electricity accumulating unit charge period to above-mentioned tertiary coil connecting valve, connect above-mentioned (k+1) electricity accumulating unit downside connecting valve and above-mentioned k electricity accumulating unit upside connecting valve, disconnect above-mentioned (k+1) electricity accumulating unit downside connecting valve switch and the switch in addition of the above-mentioned k electricity accumulating unit upside connecting valve in above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve in addition in above-mentioned the first electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve.By adopting this structure, do not need to arrange a plurality of coils, can be made as the structure of equilibrium charging circuit integral body less.
Can be also that above-mentioned more than first switch comprises: the first coil connecting valve, the one end is connected with above-mentioned input terminal, and the other end is connected with an end of above-mentioned coil; And the 4th coil connecting valve, the one end is connected with an end of above-mentioned coil, the other end is connected with the said reference voltage terminal, above-mentioned more than second switch comprises: the 3rd electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve, the one end is connected with the downside separately of above-mentioned the 3rd electricity accumulating unit to the N electricity accumulating unit, and the other end is connected with an end of above-mentioned coil; And first electricity accumulating unit upside connecting valve to the (N-1) the electricity accumulating unit upside connecting valve, the one end is connected with the upside separately of above-mentioned the first electricity accumulating unit to the (N-1) electricity accumulating unit, and the other end is connected with an end of above-mentioned coil.By adopting this structure, do not need to arrange a plurality of coils, can be made as the structure of equilibrium charging circuit integral body less.
can be also, above-mentioned control circuit is connected above-mentioned the first coil connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve between above-mentioned the first coil charge period, connect above-mentioned the 4th coil connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve in during the N coil charges during above-mentioned the second coil charges, disconnect above-mentioned the 3rd electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve, connect above-mentioned the 4th coil connecting valve between above-mentioned the first electricity accumulating unit charge period, connect above-mentioned the first electricity accumulating unit upside connecting valve, disconnect above-mentioned the first electricity accumulating unit upside connecting valve switch in addition in above-mentioned the 3rd electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve, disconnect above-mentioned the first coil connecting valve between above-mentioned k (k 〉=2) electricity accumulating unit charge period to above-mentioned tertiary coil connecting valve, connect above-mentioned (k+1) electricity accumulating unit downside connecting valve and above-mentioned k electricity accumulating unit upside connecting valve, disconnect above-mentioned (k+1) electricity accumulating unit downside connecting valve switch and the switch in addition of the above-mentioned k electricity accumulating unit upside connecting valve in above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve in addition in above-mentioned the first electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve.By adopting this structure, do not need to arrange a plurality of coils, can be made as the structure of equilibrium charging circuit integral body less.
Can be also, above-mentioned control circuit (is connected above-mentioned the 4th coil connecting valve and above-mentioned (k-1) electricity accumulating unit upside connecting valve, is disconnected above-mentioned (k-1) electricity accumulating unit upside connecting valve switch in addition in above-mentioned the 3rd electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve and above-mentioned the second electricity accumulating unit upside connecting valve to the N electricity accumulating unit upside connecting valve at above-mentioned k in during 2≤k=N) coil charges.By adopting this structure, do not need to arrange a plurality of coils, can be made as the structure of equilibrium charging circuit integral body less.
Can be also that above-mentioned more than first switch comprises: the first coil connecting valve, the one end is connected with above-mentioned input terminal, and the other end is connected with an end of above-mentioned coil; And the 4th coil connecting valve, the one end is connected with an end of above-mentioned coil, the other end is connected with the said reference voltage terminal, above-mentioned more than second switch comprises: the 3rd electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve, the one end is connected with the downside separately of above-mentioned the 3rd electricity accumulating unit to the N electricity accumulating unit, and the other end is connected with an end of above-mentioned coil; And first electricity accumulating unit upside connecting valve to the (N-1) the electricity accumulating unit upside connecting valve, the one end is connected with the upside separately of above-mentioned the first electricity accumulating unit to the (N-1) electricity accumulating unit, the other end is connected with an end of above-mentioned coil, the equilibrium charging circuit of this series connection electricity accumulating unit also has: diode, its negative electrode are connected with the upside of above-mentioned the first electricity accumulating unit and anode is connected with above-mentioned the first electricity accumulating unit upside connecting valve; And electric capacity, it is connected between the anode and said reference voltage of above-mentioned diode.By adopting this structure, do not need to arrange a plurality of coils, can be made as the structure of equilibrium charging circuit integral body less.
can be also that above-mentioned more than first switch comprises: the first coil connecting valve, the one end is connected with above-mentioned input terminal, and the other end is connected with an end of above-mentioned coil, the 4th coil connecting valve, the one end is connected with an end of above-mentioned coil, the other end is connected with the said reference voltage terminal, above-mentioned more than second switch comprises: the 3rd electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve, the one end is connected with the downside separately of above-mentioned the 3rd electricity accumulating unit to the N electricity accumulating unit, and the other end is connected with an end of above-mentioned coil, and first electricity accumulating unit upside connecting valve to the (N-1) the electricity accumulating unit upside connecting valve, the one end is connected with the upside separately of above-mentioned the first electricity accumulating unit to the (N-1) electricity accumulating unit, the other end is connected with an end of above-mentioned coil, the equilibrium charging circuit of this series connection electricity accumulating unit also has: the first diode to the (N-1) diode, itself and above-mentioned the first electricity accumulating unit to the (N-1) electricity accumulating unit arrange respectively accordingly, negative electrode is connected with above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve with upside connection separately and the anode of corresponding electricity accumulating unit, the first electric capacity to the (N-1) electric capacity, itself and above-mentioned the first diode to the (N-1) diode arrange respectively accordingly, are connected between the anode and reference voltage of corresponding diode.By adopting this structure, do not need to arrange a plurality of coils, can be made as the structure of equilibrium charging circuit integral body less.
can be also, above-mentioned control circuit is connected above-mentioned the first coil connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve between above-mentioned the first coil charge period, connect above-mentioned the 4th coil connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve in during the N coil charges during above-mentioned the second coil charges, disconnect above-mentioned the 3rd electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve, connect above-mentioned the 4th coil connecting valve between above-mentioned the first electricity accumulating unit charge period, connect above-mentioned the first electricity accumulating unit upside connecting valve, disconnect above-mentioned the first electricity accumulating unit upside connecting valve switch in addition in above-mentioned the 3rd electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve, disconnect above-mentioned the first coil connecting valve between above-mentioned k (k 〉=2) electricity accumulating unit charge period to the tertiary coil connecting valve, connect above-mentioned (k+1) electricity accumulating unit downside connecting valve and above-mentioned k electricity accumulating unit upside connecting valve, disconnect above-mentioned (k+1) electricity accumulating unit downside connecting valve switch and the switch in addition of the above-mentioned k electricity accumulating unit upside connecting valve in above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve in addition in above-mentioned the first electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve.By adopting this structure, do not need to arrange a plurality of coils, can be made as the structure of equilibrium charging circuit integral body less.
Can be also, also possesses (N+1) electricity accumulating unit downside connecting valve, the one end is connected with the upside of above-mentioned N electricity accumulating unit, the other end is connected with an end of above-mentioned coil, in the situation that above-mentioned N electricity accumulating unit is charged, connect (N+1) electricity accumulating unit downside connecting valve together with above-mentioned N upside connecting valve.By adopting this structure, do not need to arrange a plurality of coils, can be made as the structure of equilibrium charging circuit integral body less.
Can be also that above-mentioned more than first switch comprises: the first coil connecting valve, the one end is connected with above-mentioned input terminal, and the other end is connected with an end of above-mentioned coil; And the second coil connecting valve, the one end is connected with the other end of above-mentioned coil, the other end is connected with the said reference voltage terminal, above-mentioned more than second switch comprises: the first electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve, the one end is connected with the downside separately of above-mentioned the first electricity accumulating unit to the N electricity accumulating unit, and the other end is connected with an end of above-mentioned coil; And first electricity accumulating unit upside connecting valve to the N electricity accumulating unit upside connecting valve, the one end is connected with the upside separately of above-mentioned the first electricity accumulating unit to the N electricity accumulating unit, and the other end is connected with an end of above-mentioned coil.By adopting this structure, do not need to arrange a plurality of coils, can be made as the structure of equilibrium charging circuit integral body less.
can be also, above-mentioned control circuit is connected above-mentioned the first coil connecting valve and above-mentioned the second coil connecting valve in during the N coil charges between above-mentioned the first coil charge period, (connect above-mentioned k electricity accumulating unit downside connecting valve and above-mentioned k electricity accumulating unit upside connecting valve between the electricity accumulating unit charge period of 1≤k≤N) at above-mentioned k, disconnect above-mentioned k electricity accumulating unit downside connecting valve switch and the switch in addition of the above-mentioned k electricity accumulating unit upside connecting valve in above-mentioned the first electricity accumulating unit upside connecting valve to the N electricity accumulating unit upside connecting valve in addition in above-mentioned the first electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve.By adopting this structure, do not need to arrange a plurality of coils, can be made as the structure of equilibrium charging circuit integral body less.
Can be also, above-mentioned control circuit control above-mentioned switch make and above-mentioned k (k is odd number) coil charges during and carry out after between above-mentioned k (k is odd number) electricity accumulating unit charge period, suitable action is all completed and above-mentioned k (k is even number) coil charges during and suitable action between above-mentioned k (k is even number) electricity accumulating unit charge period.By adopting this structure, do not need to arrange a plurality of coils, can be made as the structure of equilibrium charging circuit integral body less.In addition, the electric current of flowing through coil towards the number of times that changes for once, the efficient of power consumption is high.
Can be also, above-mentioned control circuit is for above-mentioned the first electricity accumulating unit to the N electricity accumulating unit, control above-mentioned switch make with above-mentioned P (P is any in 1～N) electricity accumulating unit and above-mentioned Q (Q be in 1～N any and except P) upside of electricity accumulating unit is electrically connected to each other to keep the balance of the charging voltage of above-mentioned P electricity accumulating unit and above-mentioned Q electricity accumulating unit.By adopting this structure, do not need to arrange a plurality of coils, can be made as the structure of equilibrium charging circuit integral body less.By adopting this structure, do not need to arrange a plurality of coils, can be made as the structure of equilibrium charging circuit integral body less.
and, in the balance charging method of series connection electricity accumulating unit of the present invention, the power supply that is connected input terminal provides electric power, (N is the integer more than 2 to the first electricity accumulating unit to the N electricity accumulating unit of being connected in series in order from the said reference voltage terminal between lead-out terminal and reference voltage terminal, carry out equilibrium charging down together), the balance charging method of this series connection electricity accumulating unit is characterised in that, comprise: first step, it is connected electrically in coil between above-mentioned input terminal and said reference voltage terminal, will be for (charging current that the electricity accumulating unit of 1≤k≤N) charges is filled with above-mentioned coil to above-mentioned k, second step, it is electrically connected to above-mentioned coil with the two ends of above-mentioned k electricity accumulating unit, and the charging current that will be filled into above-mentioned coil in above-mentioned first step is filled with above-mentioned k electricity accumulating unit, and third step, it repeats above-mentioned first step and above-mentioned second step charges seriatim to above-mentioned the first electricity accumulating unit to the N electricity accumulating unit.By adopting the method, do not need to arrange a plurality of coils, can carry out equilibrium charging to the series connection electricity accumulating unit by a coil.
The effect of invention
According to the present invention, will namely can be realized by a coil for the coil that electric charge is filled with series unit and sharedization of coil that is used for the balance of the voltage between the maintenance series unit, therefore play circuit integral body to be configured more small-sized such effect.
In addition, keep the balance of voltage and series unit is charged, therefore not needing charging circuit is set in addition, playing circuit integral body to be configured more small-sized such effect.
Description of drawings
Fig. 1 means the circuit diagram of the first execution mode of the present invention.
Fig. 2 is the figure be used to the action that the first execution mode of the present invention is described.
Fig. 3 is the figure be used to the action that the first execution mode of the present invention is described.
Fig. 4 is the figure be used to the action that the first execution mode of the present invention is described.
Fig. 5 is the figure be used to the action that the first execution mode of the present invention is described.
Fig. 6 is the figure be used to the action that the first execution mode of the present invention is described.
Fig. 7 means the figure of the Control the content of the control circuit in the first execution mode of the present invention.
Fig. 8 means the figure of the Control the content of the control circuit in the first execution mode of the present invention.
Fig. 9 means the circuit diagram of the second execution mode of the present invention.
Figure 10 is the figure be used to the action that the second execution mode of the present invention is described.
Figure 11 is the figure be used to the action that the second execution mode of the present invention is described.
Figure 12 is the figure be used to the action that the second execution mode of the present invention is described.
Figure 13 is the figure be used to the action that the second execution mode of the present invention is described.
Figure 14 means the figure of the Control the content of the control circuit in the second execution mode of the present invention.
Figure 15 means the circuit diagram of the 3rd execution mode of the present invention.
Figure 16 is the figure be used to the action that the 3rd execution mode of the present invention is described.
Figure 17 is the figure be used to the action that the 3rd execution mode of the present invention is described.
Figure 18 is the figure be used to the action that the 3rd execution mode of the present invention is described.
Figure 19 is the figure be used to the action that the 3rd execution mode of the present invention is described.
Figure 20 means the figure of the Control the content of the control circuit in the 3rd execution mode of the present invention.
Figure 21 means the circuit diagram of the 4th execution mode of the present invention.
Figure 22 is the figure be used to the action that the 4th execution mode of the present invention is described.
Figure 23 is the figure be used to the action that the 4th execution mode of the present invention is described.
Figure 24 is the figure be used to the action that the 4th execution mode of the present invention is described.
Figure 25 is the figure be used to the action that the 4th execution mode of the present invention is described.
Figure 26 means the figure of the Control the content of the control circuit in the 4th execution mode of the present invention.
Figure 27 means the circuit diagram of the 5th execution mode of the present invention.
Figure 28 is the figure be used to the action that the 5th execution mode of the present invention is described.
Figure 29 is the figure be used to the action that the 5th execution mode of the present invention is described.
Figure 30 is the figure be used to the action that the 5th execution mode of the present invention is described.
Figure 31 is the figure be used to the action that the 5th execution mode of the present invention is described.
Figure 32 means the figure of the Control the content of the control circuit in the 5th execution mode of the present invention.
Figure 33 means the circuit diagram of the 6th execution mode of the present invention.
Figure 34 is the figure be used to the action that the 6th execution mode of the present invention is described.
Figure 35 is the figure be used to the action that the 6th execution mode of the present invention is described.
Figure 36 is the figure be used to the action that the 6th execution mode of the present invention is described.
Figure 37 is the figure be used to the action that the 6th execution mode of the present invention is described.
Figure 38 means the figure of the Control the content of the control circuit in the 6th execution mode of the present invention.
Figure 39 means the circuit diagram of the 7th execution mode of the present invention.
Figure 40 is the figure be used to the action that the 7th execution mode of the present invention is described.
Figure 41 is the figure be used to the action that the 7th execution mode of the present invention is described.
Figure 42 is the figure be used to the action that the 7th execution mode of the present invention is described.
Figure 43 is the figure be used to the action that the 7th execution mode of the present invention is described.
Figure 44 is the figure be used to the action that the 7th execution mode of the present invention is described.
Figure 45 means the figure of the Control the content of the control circuit in the 7th execution mode of the present invention.
Figure 46 means the circuit diagram of the 8th execution mode of the present invention.
Figure 47 is the figure be used to the action that the 8th execution mode of the present invention is described.
Figure 48 is the figure be used to the action that the 8th execution mode of the present invention is described.
Figure 49 is the figure be used to the action that the 8th execution mode of the present invention is described.
Figure 50 is the figure be used to the action that the 8th execution mode of the present invention is described.
Figure 51 means the figure of the Control the content of the control circuit in the 8th execution mode of the present invention.
Figure 52 means the circuit diagram of the 9th execution mode of the present invention.
Figure 53 is the figure be used to the action that the 9th execution mode of the present invention is described.
Figure 54 is the figure be used to the action that the 9th execution mode of the present invention is described.
Figure 55 is the figure be used to the action that the 9th execution mode of the present invention is described.
Figure 56 is the figure be used to the action that the 9th execution mode of the present invention is described.
Figure 57 is the figure be used to the action that the 9th execution mode of the present invention is described.
Figure 58 is the figure be used to the action that the 9th execution mode of the present invention is described.
Figure 59 means the figure of the Control the content of the control circuit in the 9th execution mode of the present invention.
Figure 60 means the figure of the Control the content of the control circuit in the variation of the 9th execution mode of the present invention.
Figure 61 means the figure of the Control the content of the control circuit in the variation of the 9th execution mode of the present invention.
Figure 62 means the figure of the Control the content of the control circuit in the variation of the 9th execution mode of the present invention.
Figure 63 means the circuit diagram of the tenth execution mode of the present invention.
Figure 64 is the figure be used to the action that the tenth execution mode of the present invention is described.
Figure 65 is the figure be used to the action that the tenth execution mode of the present invention is described.
Figure 66 is the figure be used to the action that the tenth execution mode of the present invention is described.
Figure 67 is the figure be used to the action that the tenth execution mode of the present invention is described.
Figure 68 is the figure be used to the action that the tenth execution mode of the present invention is described.
Figure 69 means the figure of the Control the content of the control circuit in the tenth execution mode of the present invention.
Figure 70 means the circuit diagram of the 11 execution mode of the present invention.
Figure 71 is the figure be used to the action that the 11 execution mode of the present invention is described.
Figure 72 is the figure be used to the action that the 11 execution mode of the present invention is described.
Figure 73 is the figure be used to the action that the 11 execution mode of the present invention is described.
Figure 74 is the figure be used to the action that the 11 execution mode of the present invention is described.
Figure 75 is the figure be used to the action that the 11 execution mode of the present invention is described.
Figure 76 means the figure of the Control the content of the control circuit in the 11 execution mode of the present invention.
Figure 77 means the circuit diagram of the 12 execution mode of the present invention.
Figure 78 is the figure be used to the action that the 12 execution mode of the present invention is described.
Figure 79 is the figure be used to the action that the 12 execution mode of the present invention is described.
Figure 80 is the figure be used to the action that the 12 execution mode of the present invention is described.
Figure 81 is the figure be used to the action that the 12 execution mode of the present invention is described.
Figure 82 is the figure be used to the action that the 12 execution mode of the present invention is described.
Figure 83 is the figure be used to the action that the 12 execution mode of the present invention is described.
Figure 84 means the figure of the Control the content of the control circuit in the 12 execution mode of the present invention.
Figure 85 means the circuit diagram of the 13 execution mode of the present invention.
Figure 86 is the figure be used to the action that the 13 execution mode of the present invention is described.
Figure 87 is the figure be used to the action that the 13 execution mode of the present invention is described.
Figure 88 is the figure be used to the action that the 13 execution mode of the present invention is described.
Figure 89 is the figure be used to the action that the 13 execution mode of the present invention is described.
Figure 90 is the figure be used to the action that the 13 execution mode of the present invention is described.
Figure 91 means the figure of the Control the content of the control circuit in the 13 execution mode of the present invention.
Figure 92 means the circuit diagram of the 14 execution mode of the present invention.
Figure 93 is the figure be used to the action that the 14 execution mode of the present invention is described.
Figure 94 is the figure be used to the action that the 14 execution mode of the present invention is described.
Figure 95 is the figure be used to the action that the 14 execution mode of the present invention is described.
Figure 96 is the figure be used to the action that the 14 execution mode of the present invention is described.
Figure 97 is the figure be used to the action that the 14 execution mode of the present invention is described.
Figure 98 is the figure be used to the action that the 14 execution mode of the present invention is described.
Figure 99 means the figure of the Control the content of the control circuit in the 14 execution mode of the present invention.
The figure of the example that the unit balance when Figure 100 means discharge is controlled.
The figure of the example that the unit balance when Figure 101 means discharge is controlled.
The figure of the example that the unit balance when Figure 102 means discharge is controlled.
The figure of the example that the unit balance when Figure 103 means discharge is controlled.
The figure of the example that the unit balance when Figure 104 means discharge is controlled.
The figure of the example that the unit balance when Figure 105 means discharge is controlled.
The figure of the example that the unit balance when Figure 106 means discharge is controlled.
The figure of the example that the unit balance when Figure 107 means discharge is controlled.
The figure of the example that the unit balance when Figure 108 means discharge is controlled.
Figure 109 means the circuit diagram of the equilibrium charging circuit of series unit in the past.
Figure 110 is the figure for the action of the equilibrium charging circuit of explanation series unit in the past.
Figure 111 is the figure for the action of the equilibrium charging circuit of explanation series unit in the past.
Figure 112 is the figure for the action of the equilibrium charging circuit of explanation series unit in the past.
Figure 113 is the figure for the action of the equilibrium charging circuit of explanation series unit in the past.
Embodiment
Below, illustrate referring to the drawings embodiments of the present invention.In addition, in each figure of reference, the part identical with other figure represents with same reference numerals, suitably omits the explanation relevant with same section in the following description.
(structure of the equilibrium charging circuit of the first execution mode)
At first, the structure of the equilibrium charging circuit of the series unit that the first execution mode of the present invention is related is described.Fig. 1 means the circuit diagram of the first execution mode of the present invention.
The equilibrium charging circuit of the series unit that the first execution mode of the present invention is related possesses coil is arranged (inductor) L1, switch S 1～S6, control circuit Control1, unit Cell1 and unit Cell2.Unit Cell1 and unit Cell2 are connected in series, and a side of series connection end is connected with lead-out terminal 102, the opposing party and reference voltage terminal sub-connection.And, one end of switch S 1 is connected contact and is connected with unit Cell2 with unit Cell1, one end of switch S 2 is connected with input terminal 101, one end of switch S 3 and reference voltage terminal sub-connection, one end of switch S 4 is connected with lead-out terminal 102, one end of switch S 5 and reference voltage terminal sub-connection, an end of switch S 6 are connected contact and are connected with unit Cell2 with unit Cell1.In addition, the end of coil L1 is connected with the other end of switch S 1～S3, and the other end is connected with the other end of switch S 4～S6.And control circuit Control1 is connected to control break-make with the control terminal of switch S 1～S6.Control circuit Control1 for example can by the sequential circuit of having used well-known gate circuit, generate and each unit in electric current and the pwm signal generative circuit of the pwm signal of the corresponding pulsewidth of voltage realize.
At this, switch S 1～S6 can be realized by semiconductor elements such as N-channel MOS transistor, P channel MOS transistor, npn type bipolar transistor, positive-negative-positive bipolar transistors.
In the situation that adopted N-channel MOS transistor, P channel MOS transistor as switch, an end of switch is the side arbitrarily in source electrode and drain electrode, and the other end is the opposing party arbitrarily of source electrode and drain electrode.In addition, control terminal is grid.
In the situation that adopted npn type bipolar transistor, positive-negative-positive bipolar transistor as switch, an end of switch is the side arbitrarily in emitter and collector, and the other end is the opposing party arbitrarily in emitter and collector.In addition, control terminal is base stage.
In the situation that adopted N-channel MOS transistor, npn type bipolar transistor as switch, when being made as high voltage, connects control terminal, disconnect when being made as low-voltage.
In the situation that adopted P channel MOS transistor, positive-negative-positive bipolar transistor as switch, when being made as low-voltage, connects control terminal, disconnect when being made as high voltage.
To contact voltage Vmid and the reference voltage V com of control circuit Control1 input and output voltage Vout, unit Cell1 and unit Cell2, control circuit Control1 obtains the both end voltage of unit Cell1 and unit Cell2.In addition, monitor the charging current of flow through each unit Cell1, unit Cell2 by current monitoring circuit M1, M2, input the current value that monitors to control circuit Control1.And control circuit Control1 comes the time of the break-make of control switch S1～S6 to make each unit Cell1 and unit Cell2 be balanced charging according to the both end voltage of obtaining and the current value that monitors.
Current monitoring circuit M1, M2 can be by having used the current sensor that detects resistance, current mirroring circuit etc. to realize.
(action of the equilibrium charging circuit of the first execution mode)
Then, say that the action of equilibrium charging circuit of the series unit that the first execution mode of the present invention is related is bright.Fig. 2～Fig. 6 is the figure be used to the action that the first execution mode of the present invention is described.
The equilibrium charging circuit of the series unit that the first execution mode of the present invention is related is set between the first～the 4th charge period by control circuit Control1 for series unit being charged and keeping the balance of the voltage between series unit.
At first, between the first charge period in, control circuit Control1 turn on-switch S2 and switch S 6.Then, by input terminal 101 input input voltage vin, accumulate for electric charge being filled with the charging current of unit Cell2 to coil L1.The path of charging current represents with the dotted arrow of Fig. 2.
In addition, between the first charge period in, control circuit Control1 also can constitute turn on-switch S2 and switch S 5 as shown in Figure 3.Then, by input terminal 101 input input voltage vin, accumulate for electric charge being filled with the charging current of unit Cell2 to coil L1.The path of charging current represents with the dotted arrow of Fig. 3.
Then, between the second charge period in, control circuit Control1 cut-off switch S2, turn on-switch S3 and switch S 6.Then, the charging current that is filled with coil L1 is filled with unit Cell2.The path of charging current represents with the dotted arrow of Fig. 4.
In addition, in the situation that between the first charge period, inner control circuit Control1 constitutes turn on-switch S2 and switch S 5 as shown in Figure 3, inner control circuit Control1 cut-off switch S2 and switch S 5 between the second charge period.
Afterwards, between the 3rd charge period in, control circuit Control1 cut-off switch S3 and switch S 6, turn on-switch S2 and switch S 5.Then, accumulate for electric charge being filled with the charging current of unit Cell1 to coil L1.The path of charging current represents with the dotted arrow of Fig. 5.
And, between the 4th charge period in, control circuit Control1 cut-off switch S2 and switch S 5, turn on-switch S1 and switch S 4.Then, the charging current of charge coil L1 is filled with unit Cell1.The path of charging current shown in Figure 6.
At this, the Control the content of control circuit Control1 is described with reference to Fig. 7.Fig. 7 is illustrated in the situation that between each charge period of T1～T4 between the first～the 4th charge period, inner control circuit Control1 connects the switch S 1～S6 in Fig. 1.That is, by control circuit Contro1, the corresponding switch in the hurdle that is recited as " connection " with in this figure in switch S 1～S6 is made as on-state, in addition switch is made as off-state.
As shown in Figure 7, turn on-switch S1 and S6 as described above in T1 between the first charge period.Then, turn on-switch S3 and S6 in T2 between the second charge period.In addition, turn on-switch S2 and S5 in T3 between the 3rd charge period.And, turn on-switch S1 and S4 in T4 between the 4th charge period.
Control circuit Control1 repeats the such connection control of T1～T4 between the first～the 4th charge period described above to switch S1～S6, therefore can realize using the equilibrium charging circuit of a coil L1.
In addition, in turn on-switch S2 and switch S 5 as describing with reference to Fig. 3 in the situation that between the first charge period, the Control the content of control circuit Control1 becomes as shown in Figure 8.That is, by control circuit Contro1, the corresponding switch in the hurdle that is recited as " connection " with in this figure in switch S 1～S6 is made as on-state, in addition switch is made as off-state.
In Fig. 8, turn on-switch S2 and S5 as described above in T1 between the first charge period.Then, turn on-switch S3 and S6 in T2 between the second charge period.In addition, turn on-switch S2 and S5 in T3 between the 3rd charge period.And, turn on-switch S1 and S4 in T4 between the 4th charge period.
The equilibrium charging circuit of the series unit that the first execution mode of the present invention is related the single coil of the electric power that provides from power supply will be provided as described above temporarily be arranged to be shared so that unit Cell1 and unit Cell2 are charged by unit Cell1 and unit Cell2.And, between the first charge period and the charging of carrying out unit Cell2 between the second charge period, carry out the charging of unit Cell1 between the 3rd and the 4th charge period.That is to say, can charge to unit Cell1 and unit Cell2 independently, therefore by the time of the turn on-switch in setting between the first～the 4th charge period according to the capacitance of unit Cell1 with the deviation of the capacitance of unit Cell2, electric charge can be filled with the balance of the voltage between series unit and maintenance series unit.
For example, in the situation that the capacitance of unit Cell1 is larger than the capacitance of unit Cell2, as long as set the time of turn on-switch interior between the 3rd and the 4th charge period longer than the time of turn on-switch interior between the first and second charge period.On the other hand, in the situation that the capacitance of unit Cell1 is less than the capacitance of unit Cell2, as long as set the time of turn on-switch interior between the 3rd and the 4th charge period shorter than the time of turn on-switch interior between the first and second charge period.And, by by control circuit Control1 in order between repeatedly setting first～the 4th charge period, electric charge can be filled with series unit and keep the balance of the voltage between series unit, obtain output voltage V out from lead-out terminal 102.
The equilibrium charging circuit of the series unit that the first execution mode of the present invention is related is by above-mentioned structure and action, can be with sharedization of coil that is used for electric charge is filled with the coil of series unit and is used for keeping the balance of the voltage between series unit, namely realized by a coil, therefore play making the whole small-sized such effect of circuit.
And, each unit of series unit between the first～the 4th charge period arbitrarily during in do not discharge, therefore also play following effect: can be filled with electric charge and keep the balance of the voltage between series unit the limited series unit of charging times.
(structure of the equilibrium charging circuit of the second execution mode)
The structure of the equilibrium charging circuit of the series unit that the second execution mode of the present invention is related then, is described.Fig. 9 means the circuit diagram of the second execution mode of the present invention.
The equilibrium charging circuit of the series unit that the second execution mode of the present invention is related possesses coil L1, switch S 1～S5, control circuit Control2, unit Cell1 and unit Cell2, unit Cell1 and unit Cell2 are connected in series, one side of series connection end is connected with lead-out terminal 202, the opposing party and reference voltage terminal sub-connection.And, one end of switch S 1 is connected with lead-out terminal 202, and an end of switch S 2 is connected with input terminal 201, an end of switch S 3 and reference voltage terminal sub-connection, one end of switch S 4 is connected with input terminal 201, and an end of switch S 5 is connected contact and is connected with unit Cell2 with unit Cell1.In addition, the other end of switch S 1～S3 is connected with the end of coil L1, and the other end of switch S 4～S5 is connected with the other end of coil L1.And control circuit Control2 is connected to control break-make with the control terminal of switch S 1～S5.Control circuit Control2 for example can by the sequential circuit of having used well-known gate circuit, generate and each unit in electric current and the pwm signal generative circuit of the pwm signal of the corresponding pulsewidth of voltage realize.
With the equilibrium charging circuit of the related series unit of the first execution mode of the present invention similarly, switch S 1～S5 can be realized by semiconductor elements such as N-channel MOS transistor, P channel MOS transistor, npn type bipolar transistor, positive-negative-positive bipolar transistors.
In the situation that adopted N-channel MOS transistor, P channel MOS transistor as switch, an end of switch is the side arbitrarily in source electrode and drain electrode, and the other end is the opposing party arbitrarily in source electrode and drain electrode.In addition, control terminal is grid.
In the situation that adopted npn type bipolar transistor, positive-negative-positive bipolar transistor as switch, an end of switch is the side arbitrarily in emitter and collector, and the other end is the opposing party arbitrarily in emitter and collector.In addition, control terminal is base stage.
In the situation that adopted N-channel MOS transistor, npn type bipolar transistor as switch, when being made as high voltage, connects control terminal, disconnect when being made as low-voltage.
In the situation that adopted P channel MOS transistor, positive-negative-positive bipolar transistor as switch, when being made as low-voltage, connects control terminal, disconnect when being made as high voltage.
To contact voltage Vmid and the reference voltage V com of control circuit Control2 input and output voltage Vout, unit Cell1 and unit Cell2, control circuit Control2 obtains the both end voltage of unit Cell1 and unit Cell2.In addition, monitor the charging current of flow through each unit Cell1, unit Cell2 and the current value that monitors to control circuit Control2 input by current monitoring circuit M1, M2.And control circuit Control2 comes the break-make of control switch S1～S5 to make each unit Cell1 and unit Cell2 be balanced charging according to the both end voltage of obtaining and the current value that monitors.
Current monitoring circuit M1, M2 can be by having used the current sensor that detects resistance, current mirroring circuit etc. to realize.
(action of the equilibrium charging circuit of the second execution mode)
The action of the equilibrium charging circuit of the series unit that the second execution mode of the present invention is related then, is described.Figure 10～Figure 13 is the figure be used to the action that the second execution mode of the present invention is described.
The equilibrium charging circuit of the series unit that the second execution mode of the present invention is related is set between the first～the 4th charge period that by control circuit Control2 series unit is charged and is kept the balance of the voltage between series unit.
At first, between the first charge period in, control circuit Control2 turn on-switch S2 and switch S 5.Then, by input terminal 201 input input voltage vin, accumulate for electric charge being filled with the charging current of unit Cell2 to coil L1.The path of charging current represents with the dotted arrow of Figure 10.
Then, between the second charge period in, control circuit Control2 cut-off switch S2, turn on-switch S3 and switch S 5.Then, the charging current that is filled with coil L1 is filled with unit Cell2.The path of charging current represents with the dotted arrow of Figure 11.
Afterwards, between the 3rd charge period in, control circuit Control2 cut-off switch S3 and switch S 5, turn on-switch S3 and switch S 4.Then, accumulate for electric charge being filled with the charging current of unit Cell1 to coil L1.The path of charging current represents with the dotted arrow of Figure 12.
And, between the 4th charge period in, control circuit Control2 cut-off switch S3 and switch S 4, turn on-switch S1 and switch S 5.Then, the charging current that is filled with coil L1 is filled with unit Cell1.The path of charging current shown in Figure 13.
At this, the Control the content of control circuit Control2 is described with reference to Figure 14.This illustrates the situation that inner control circuit Control2 between each charge period of T1～T4 between the first～the 4th charge period connects the switch S 1～S5 in Fig. 9.That is, by control circuit Control2, the corresponding switch in the hurdle that is recited as " connection " with in this figure in switch S 1～S5 is made as on-state, in addition switch is made as off-state.
As shown in Figure 14, turn on-switch S2 and S5 as described above in T1 between the first charge period.Then, turn on-switch S3 and S5 in T2 between the second charge period.In addition, turn on-switch S3 and S4 in T3 between the 3rd charge period.And, turn on-switch S1 and S5 in T4 between the 4th charge period.
Control circuit Control2 repeats the such connection control of T1～T4 between the first～the 4th charge period described above to switch S1～S5, therefore can realize using the equilibrium charging circuit of a coil L1.
The equilibrium charging circuit of the series unit that the second execution mode of the present invention is related the single coil of the electric power that provides from power supply will be provided as described above temporarily be arranged to be shared so that unit Cell1 and unit Cell2 are charged by unit Cell1 and unit Cell2.And, between the first charge period and the charging of carrying out unit Cell2 between the second charge period, carry out the charging of unit Cell1 between the 3rd and the 4th charge period.That is to say, can charge to unit Cell1 and unit Cell2 independently, therefore by the time of the turn on-switch in setting between the first～the 4th charge period according to the capacitance of unit Cell1 with the deviation of the capacitance of unit Cell2, electric charge can be filled with the balance of the voltage between series unit and maintenance series unit.
For example, in the situation that the capacitance of unit Cell1 is larger than the capacitance of unit Cell2, as long as set the time of turn on-switch interior between the 3rd and the 4th charge period longer than the time of turn on-switch interior between the first and second charge period.On the other hand, in the situation that the capacitance of unit Cell1 is less than the capacitance of unit Cell2, as long as set the time of turn on-switch interior between the 3rd and the 4th charge period shorter than the time of turn on-switch interior between the first and second charge period.And, in order between repeatedly setting first～the 4th charge period, electric charge can be filled with series unit by control circuit Control2, and keep the balance of the voltage between series unit, obtain output voltage V out from lead-out terminal 202.In addition, if the time of the turn on-switch in setting between the second and the 4th charge period makes the charging current of coil L1 when finishing become zero, can eliminate the time that is used for eliminating the residual current of coil L1 when finishing between the second and the 4th charge period between the first and the 3rd charge period when beginning between the second and the 4th charge period.And, can also prevent the power consumption that flows and produce to the regenerative current of mains side due in the dead resistance of each element on current path between the first and the 3rd charge period.
The equilibrium charging circuit of the series unit that the second execution mode of the present invention is related is by above-mentioned structure and action, can be with sharedization of coil that is used for electric charge is filled with the coil of series unit and is used for keeping the balance of the voltage between series unit, namely realized by a coil, therefore play making the whole small-sized such effect of circuit.
In addition, compare with the equilibrium charging circuit of the related series unit of the first execution mode of the present invention, therefore few one of the quantity of switch play and can make the more small-sized such effect of circuit integral body.
And, each unit of series unit between the first～the 4th charge period arbitrarily during in do not discharge, therefore also play following effect: can be filled with electric charge and keep the balance of the voltage between series unit the limited series unit of charging times.
(structure of the equilibrium charging circuit of the 3rd execution mode)
The structure of the equilibrium charging circuit of the series unit that the 3rd execution mode of the present invention is related then, is described.Figure 15 means the circuit diagram of the 3rd execution mode of the present invention.
The equilibrium charging circuit of the series unit that the 3rd execution mode of the present invention is related possesses coil L1, switch S 1～S3, control circuit Control3, unit Cell1 and unit Cell2, unit Cell1 and unit Cell2 are connected in series, one side of series connection end is connected with lead-out terminal 302, the opposing party and reference voltage terminal sub-connection.And an end of switch S 1 is connected with lead-out terminal 302, and an end of switch S 2 is connected with input terminal 301, an end of switch S 3 and reference voltage terminal sub-connection.In addition, be connected with the end of coil L1 at the other end of switch S 1～S3, unit Cell1 is connected contact and is connected with the other end of coil L1 with unit Cell2.And control circuit Control3 is connected to control break-make with the control terminal of switch S 1～S3.Control circuit Control3 for example can by the sequential circuit of having used well-known gate circuit, generate and each unit in electric current and the pwm signal generative circuit of the pwm signal of the corresponding pulsewidth of voltage realize.
With the equilibrium charging circuit of the related series unit of the first execution mode of the present invention similarly, switch S 1～S3 can be realized by semiconductor elements such as N-channel MOS transistor, P channel MOS transistor, npn type bipolar transistor, positive-negative-positive bipolar transistors.
In the situation that adopted N-channel MOS transistor, P channel MOS transistor as switch, an end of switch is the side arbitrarily in source electrode and drain electrode, and the other end is the opposing party arbitrarily in source electrode and drain electrode.In addition, control terminal is grid.
In the situation that adopted npn type bipolar transistor, positive-negative-positive bipolar transistor as switch, an end of switch is the side arbitrarily in emitter and collector, and the other end is the opposing party arbitrarily in emitter and collector.In addition, control terminal is base stage.
In the situation that adopted N-channel MOS transistor, npn type bipolar transistor as switch, when being made as high voltage, connects control terminal, disconnect when being made as low-voltage.
In the situation that adopted P channel MOS transistor, positive-negative-positive bipolar transistor as switch, when being made as low-voltage, connects control terminal, disconnect when being made as high voltage.
To contact voltage Vmid and the reference voltage V com of control circuit Control3 input and output voltage Vout, unit Cell1 and unit Cell2, control circuit Control3 obtains the both end voltage of unit Cell1 and unit Cell2.In addition, monitor the charging current of flow through each unit Cell1, unit Cell2 and the current value that monitors to control circuit Control3 input by current monitoring circuit M1, M2.And control circuit Control3 comes the make-and-break time of control switch S1～S3 to make each unit Cell1 and unit Cell2 be balanced charging according to the both end voltage of obtaining and the current value that monitors.
Current monitoring circuit M1, M2 can be by having used the current sensor that detects resistance, current mirroring circuit etc. to realize.
(action of the equilibrium charging circuit of the 3rd execution mode)
The action of the equilibrium charging circuit of the series unit that the 3rd execution mode of the present invention is related then, is described.Figure 16～Figure 19 is the figure be used to the action that the 3rd execution mode of the present invention is described.
The equilibrium charging circuit of the series unit that the 3rd execution mode of the present invention is related is set between the first～the 4th charge period that by control circuit Control3 series unit is charged and is kept the balance of the voltage between series unit.
At first, between the first charge period in, control circuit Control3 turn on-switch S2.Then, by input terminal 301 input input voltage vin, accumulate for electric charge being filled with the charging current of unit Cell2 to coil L1.The path of charging current represents with the dotted arrow of Figure 16.
Then, between the second charge period in, control circuit Control3 cut-off switch S2, turn on-switch S3.Then, the charging current that is filled with coil L1 is filled with unit Cell2.The path of charging current represents with the dotted arrow of Figure 17.
Afterwards, between the 3rd charge period in, control circuit Control3 turn on-switch S3.Then, accumulate for electric charge being filled with the charging current of unit Cell1 to coil L1 by unit Cell2.The path of charging current represents with the dotted arrow of Figure 18.
And, between the 4th charge period in, control circuit Control3 cut-off switch S3, turn on-switch S1.Then, the charging current that is filled with coil L1 is filled with unit Cell1.The path of charging current shown in Figure 19.
At this, the Control the content of control circuit Control3 is described with reference to Figure 20.This illustrates the situation that inner control circuit Control3 between each charge period of T1～T4 between the first～the 4th charge period connects the switch S 1～S3 in Figure 15.That is, by control circuit Control3, the corresponding switch in the hurdle that is recited as " connection " with in this figure in switch S 1～S3 is made as on-state, in addition switch is made as off-state.
As shown in Figure 20, between the first charge period in T1, turn on-switch S2 as described above.Then, turn on-switch S3 in T2 between the second charge period.In addition, turn on-switch S3 in T3 between the 3rd charge period.And, turn on-switch S1 in T4 between the 4th charge period.
Control circuit Control3 repeats the such connection control of T1～T4 between the first～the 4th charge period described above for switch S 1～S3, therefore can realize using the equilibrium charging circuit of a coil L1.
The equilibrium charging circuit of the series unit that the 3rd execution mode of the present invention is related the single coil of the electric power that provides from power supply will be provided as described above temporarily be arranged to be shared so that unit Cell1 and unit Cell2 are charged by unit Cell1 and unit Cell2.And, between the first charge period and the charging of carrying out unit Cell2 between the second charge period, carry out the charging of unit Cell1 between the 3rd and the 4th charge period.That is to say, can charge to unit Cell1 and unit Cell2 independently, therefore by set the time of the switch in connecting between the first～the 4th charge period according to the capacitance of unit Cell1 and the deviation of the capacitance of unit Cell2, electric charge can be filled with the balance of the voltage between series unit and maintenance series unit.
For example, in the situation that the capacitance of unit Cell1 is larger than the capacitance of unit Cell2, as long as set the time of turn on-switch interior between the 3rd and the 4th charge period longer mutually than the time of turn on-switch interior between the first and second charge period.On the other hand, in the situation that the capacitance of unit Cell1 is less than the capacitance of unit Cell2, as long as set the time of turn on-switch interior between the 3rd and the 4th charge period shorter than the time of turn on-switch interior between the first and second charge period.And, in order between repeatedly setting first～the 4th charge period, electric charge can be filled with series unit by control circuit Control3, and keep the balance of the voltage between series unit, obtain output voltage V out from lead-out terminal 302.In addition, if the time of the turn on-switch in setting between the second and the 4th charge period makes the charging current of coil L1 when finishing become zero, can eliminate the time that is used for eliminating the residual current of coil L1 when finishing between the second and the 4th charge period between the first and the 3rd charge period when beginning between the second and the 4th charge period.And, can also prevent the power consumption that flows and produce to the regenerative current of mains side due in the dead resistance of each element on current path between the first and the 3rd charge period.
The equilibrium charging circuit of the series unit that the 3rd execution mode of the present invention is related is by above-mentioned structure and action, can be with sharedization of coil that is used for electric charge is filled with the coil of series unit and is used for keeping the balance of the voltage between series unit, namely realized by a coil, therefore play making the whole small-sized such effect of circuit.
In addition, compare with the equilibrium charging circuit of the related series unit of the second execution mode of the present invention, therefore few two of the quantity of switch play and can make the more small-sized such effect of circuit integral body.
(structure of the equilibrium charging circuit of the 4th execution mode)
The structure of the equilibrium charging circuit of the series unit that the 4th execution mode of the present invention is related then, is described.Figure 21 means the circuit diagram of the 4th execution mode of the present invention.
The equilibrium charging circuit of the series unit that the 4th execution mode of the present invention is related possesses coil L1, switch S 1～S3, control circuit Control4, capacitor C 1, diode D1, unit Cell1 and unit Cell2, unit Cell1 and unit Cell2 are connected in series, one side of series connection end is connected with lead-out terminal 402, the opposing party and reference voltage terminal sub-connection.And an end of switch S 1 is connected with lead-out terminal 402, and an end of switch S 2 is connected with input terminal 401, an end of switch S 3 and reference voltage terminal sub-connection.In addition, the reference voltage terminal is connected with an end of capacitor C 1, and unit Cell1 is connected contact and is connected with the negative electrode of diode D1 with unit Cell2.The other end of switch S 1～S3 is connected with the end of coil L1, and the other end of capacitor C 1 is connected anode and is connected with the other end of coil L1 with diode D1.And control circuit Control4 is connected to control break-make with the control terminal of switch S 1～S3.Control circuit Control4 for example can by the sequential circuit of having used well-known gate circuit, generate and each unit in electric current and the pwm signal generative circuit of the pwm signal of the corresponding pulsewidth of voltage realize.
With the equilibrium charging circuit of the related series unit of the first execution mode of the present invention similarly, switch S 1～S3 can be realized by semiconductor elements such as N-channel MOS transistor, P channel MOS transistor, npn type bipolar transistor, positive-negative-positive bipolar transistors.
In the situation that adopted N-channel MOS transistor, P channel MOS transistor as switch, an end of switch is the side arbitrarily in source electrode and drain electrode, and the other end is the opposing party arbitrarily in source electrode and drain electrode.In addition, control terminal is grid.
In the situation that adopted npn type bipolar transistor, positive-negative-positive bipolar transistor as switch, an end of switch is the side arbitrarily in emitter and collector, and the other end is the opposing party arbitrarily in emitter and collector.In addition, control terminal is base stage.
In the situation that adopted N-channel MOS transistor, npn type bipolar transistor as switch, when being made as high voltage, connects control terminal, disconnect when being made as low-voltage.
In the situation that adopted P channel MOS transistor, positive-negative-positive bipolar transistor as switch, when being made as low-voltage, connects control terminal, disconnect when being made as high voltage.
To contact voltage Vmid and the reference voltage V com of control circuit Control4 input and output voltage Vout, unit Cell1 and unit Cell2, control circuit Control4 obtains the both end voltage of unit Cell1 and unit Cell2.In addition, monitor the charging current of flow through each unit Cell1, unit Cell2 by current monitoring circuit M1, M2, and input to control circuit Control4 the current value that monitors.And control circuit Control4 comes the make-and-break time of control switch S1～S3 to make each unit Cell1 and unit Cell2 be balanced charging according to the both end voltage of obtaining and the current value that monitors.
Current monitoring circuit M1, M2 can be by having used the current sensor that detects resistance, current mirroring circuit etc. to realize.
In addition, diode D1 can be by realizations such as PN junction diode, Schottky barrier diodes.
(action of the equilibrium charging circuit of the 4th execution mode)
The action of the equilibrium charging circuit of the series unit that the 4th execution mode of the present invention is related then, is described.Figure 22～Figure 25 is the figure be used to the action that the 4th execution mode of the present invention is described.
The equilibrium charging circuit of the series unit that the 4th execution mode of the present invention is related is set between the first～the 4th charge period that by control circuit Control4 series unit is charged and is kept the balance of the voltage between series unit.
At first, between the first charge period in, control circuit Control4 turn on-switch S2.Then, by input terminal 401 input input voltage vin, accumulate for the charging current that electric charge is filled with capacitor C 1 and unit Cell2 to coil L1.The path of charging current represents with the dotted arrow of Figure 22.
Then, between the second charge period in, control circuit Control4 cut-off switch S2, turn on-switch S3.Then, the charging current that is filled with coil L1 is filled with capacitor C 1 and unit Cell2.The path of charging current represents with the dotted arrow of Figure 23.
Afterwards, between the 3rd charge period in, control circuit Control4 turn on-switch S3.Then, accumulate for electric charge being filled with the charging current of unit Cell1 to coil L1 by capacitor C 1.At this moment, utilize the counterflow-preventing function of diode D1, the electric charge of unit Cell2 does not flow to coil L1 side and is held.The path of charging current represents with the dotted arrow of Figure 24.
And, between the 4th charge period in, control circuit Control4 cut-off switch S3, turn on-switch S1.Then, the charging current that is filled with coil L1 is filled with unit Cell1.The path of charging current shown in Figure 25.
At this, the Control the content of control circuit Control4 is described with reference to Figure 26.This illustrates the situation that inner control circuit Control4 between each charge period of T1～T4 between the first～the 4th charge period connects the switch S 1～S3 in Figure 21.That is, by control circuit Control4, the corresponding switch in the hurdle that is recited as " connection " with in this figure in switch S 1～S3 is made as on-state, in addition switch is made as off-state.
As shown in Figure 26, turn on-switch S2 as described above in T1 between the first charge period.Then, turn on-switch S3 in T2 between the second charge period.In addition, turn on-switch S3 in T3 between the 3rd charge period.And, turn on-switch S1 in T4 between the 4th charge period.
Control circuit Control4 repeats the such connection control of T1～T4 between the first～the 4th charge period described above for switch S 1～S3, therefore can realize using the equilibrium charging circuit of a coil L1.
The equilibrium charging circuit of the series unit that the 4th execution mode of the present invention is related the single coil of the electric power that provides from power supply will be provided as described above temporarily be arranged to be shared so that unit Cell1 and unit Cell2 are charged by unit Cell1 and unit Cell2.And, between the first charge period and the charging of carrying out unit Cell2 between the second charge period, carry out the charging of unit Cell1 between the 3rd and the 4th charge period.That is to say, can charge to unit Cell1 and unit Cell2 independently, therefore by the time of the turn on-switch in setting between the first～the 4th charge period according to the capacitance of unit Cell1 with the deviation of the capacitance of unit Cell2, electric charge can be filled with the balance of the voltage between series unit and maintenance series unit.
For example, in the situation that the capacitance of unit Cell1 is larger than the capacitance of unit Cell2, as long as set the time of turn on-switch interior between the 3rd and the 4th charge period longer than the time of turn on-switch interior between the first and second charge period.On the other hand, in the situation that the capacitance of unit Cell1 is less than the capacitance of unit Cell2, as long as set the time of turn on-switch interior between the 3rd and the 4th charge period shorter than the time of turn on-switch interior between the first and second charge period.And, in order between repeatedly setting first～the 4th charge period, electric charge can be filled with series unit by control circuit Control4, and keep the balance of the voltage between series unit, obtain output voltage V out by lead-out terminal 402.In addition, if the time of the turn on-switch in setting between the second and the 4th charge period makes the charging current of coil L1 when finishing become zero, can eliminate the time that is used for eliminating the residual current of coil L1 when finishing between the second and the 4th charge period between the first and the 3rd charge period when beginning between the second and the 4th charge period.And, can also prevent the power consumption that flows and produce to the regenerative current of mains side due in the dead resistance of each element on current path between the first and the 3rd charge period.
The equilibrium charging circuit of the series unit that the 4th execution mode of the present invention is related is by above-mentioned structure and action, can be with sharedization of coil that is used for electric charge is filled with the coil of series unit and is used for keeping the balance of the voltage between series unit, namely realized by a coil, therefore play making the whole small-sized such effect of circuit.
And, each unit of series unit between the first～the 4th charge period arbitrarily during in do not discharge, therefore also play following effect: can be filled with electric charge and keep the balance of the voltage between series unit the limited series unit of charging times.
(unit is the situation more than three)
In addition, the above has illustrated that the quantity N of the electricity accumulating unit of series connection is the situation of " 2 ", but the quantity N of electricity accumulating unit can be also " 3 " above integer.
The quantity N that the following describes electricity accumulating unit is the situation of (N 〉=3) more than 3.With reference to below the explanation carried out of each figure in, omitted diagram to control circuit and current monitoring circuit according to the convenience of drawing.That is, in the following description in each figure of institute's reference, with above-mentioned situation similarly, not shown control circuit setting below in the drawings.In addition, in the following description in each figure of institute's reference, with above-mentioned situation similarly, not shown current monitoring circuit is arranged on each electricity accumulating unit each other.
And to contact voltage Vmid1～VmidN-1 and reference voltage V com between not shown control circuit input and output voltage Vout, adjacent unit, not shown control circuit is obtained the both end voltage between Unit two.In addition, monitor the charging current of each unit of flowing through by not shown current monitoring circuit, the current value that monitors to not shown this control circuit input.And the make-and-break time that this not shown control circuit is controlled each switch according to the both end voltage of obtaining and the current value that monitors makes the unit in these unit be balanced charging.Not shown current monitoring circuit can be by having used the current sensor that detects resistance, current mirroring circuit etc. to realize.
With the equilibrium charging circuit of the related series unit of the first execution mode of the present invention similarly, each switch of using in the explanation relevant with each later execution mode can be realized by semiconductor elements such as N-channel MOS transistor, P channel MOS transistor, npn type bipolar transistor, positive-negative-positive bipolar transistors.
In the situation that adopted N-channel MOS transistor, P channel MOS transistor as switch, an end of switch is the side arbitrarily in source electrode and drain electrode, and the other end is the opposing party arbitrarily in source electrode and drain electrode.In addition, control terminal is grid.
In the situation that adopted npn type bipolar transistor, positive-negative-positive bipolar transistor as switch, an end of switch is the side arbitrarily in emitter and collector, and the other end is the opposing party arbitrarily in emitter and collector.In addition, control terminal is base stage.
In the situation that adopted N-channel MOS transistor, npn type bipolar transistor as switch, when being made as high voltage, connects control terminal, disconnect when being made as low-voltage.
In the situation that adopted P channel MOS transistor, positive-negative-positive bipolar transistor as switch, when being made as low-voltage, connects control terminal, disconnect when being made as high voltage.
Not shown control circuit is connected the switch arbitrarily that is connected with the two ends of coil L1 to electric current being filled with coil L1, connection afterwards different from this switch, with switch that the two ends of coil L1 are connected with electricity accumulating unit, the electric current by coil L1 is charged to electricity accumulating unit.In addition, not shown control circuit monitors the voltage of each electricity accumulating unit by not shown current monitoring circuit, and the right make-and-break time of control switch makes the voltage of each electricity accumulating unit become equal.
(structure of the equilibrium charging circuit of the 5th execution mode)
Figure 27 is the circuit diagram of the structure example of the equilibrium charging circuit that N the electricity accumulating unit Cell1～CellN that is connected in series charged with single coil L1.In Figure 27, the equilibrium charging circuit possesses and has: single coil L1; Switch group SW1, it is used for coil L1 is connected electrically between the input terminal 101 and reference voltage terminal that is transfused to charging voltage; And switch group SW2, it is used for the two ends of each electricity accumulating unit Cell1～CellN are electrically connected to the two ends of coil L1.
Switch group SW1 possesses switch S a1 and switch S a2, switch Sb 1 and switch Sb 2 is arranged.The end of switch S a1 and switch S a2 is connected with input terminal 101 respectively, and the other end is connected with the other end with the end of coil L1 respectively.One end of switch Sb 1 and switch Sb 2 respectively with the reference voltage terminal sub-connection, the other end of the other end and coil L1 with is connected end and is connected.
Switch group SW2 possesses switch S c1～ScN+1 and switch S d1～SdN+1 is arranged.The end of switch S c1～ScN+1 and the tie point of N electricity accumulating unit Cell1～CellN and lead-out terminal 102 and reference voltage terminal sub-connection, the other end is connected with the end of coil L1.The end of switch S d1～SdN+1 and the tie point of N electricity accumulating unit Cell1～CellN and lead-out terminal 102 and reference voltage terminal sub-connection, the other end is connected with the other end of coil L1.
(action of the equilibrium charging circuit of the 5th execution mode)
The action of the equilibrium charging circuit of the series unit that the 5th execution mode of the present invention is related then, is described.The equilibrium charging circuit of the series unit that present embodiment is related is to connect the switch arbitrarily be connected with the two ends of coil L1 to electric current being filled with coil L1, connect afterwards from above-mentioned switch to different, the electric current with coil L1 is filled with the charge-discharge circuit of electricity accumulating unit with switch that the two ends of coil L1 are connected with electricity accumulating unit, monitor the voltage of each electricity accumulating unit, control switch makes the voltage of each electricity accumulating unit become equal right turn-on time.
Figure 28～Figure 32 is the figure be used to the action that the 5th execution mode of the present invention is described.
The equilibrium charging circuit of the series unit that the 5th execution mode of the present invention is related is set the balance of charging with the electricity accumulating unit to series connection between the first～the N charge period and keeping the voltage between series unit by not shown control circuit.First half between each charge period between the first～the N charge period is (also identical in each execution mode below) during coil charges.Later half between each charge period between the first～the N charge period is (also identical in each execution mode below) between the electricity accumulating unit charge period.
At first, in the first half between the first charge period, not shown control circuit turn on-switch Sa1 and Sb1.Then, by input terminal 101 input input voltage vin, will accumulate coil L1 for the charging current that electric charge is filled with unit Cell1.The path of charging current represents with the dotted arrow of Figure 28.
Then, in later half between the first charge period, not shown control circuit cut-off switch Sa1 and Sb1, turn on-switch Sc1 and Sd2.Then, be filled with unit Cell1 by the charging current that is filled with coil L1.The path of charging current represents with the dotted arrow of Figure 29.
Afterwards, in the first half between the second charge period, not shown control circuit cut-off switch Sc1 and Sd2, turn on-switch Sa1 and Sb1.Then, by input terminal 101 input input voltage vin, will accumulate coil L1 for the charging current that electric charge is filled with unit Cell2.This state is identical with the state of Figure 28, and the path of charging current represents with the dotted arrow of Figure 28.
Then, in later half between the second charge period, cut-off switch Sa1 and Sb1, turn on-switch Sc2 and Sd3.Then, the charging current that is filled with coil L1 is filled with unit Cell2.The path of charging current represents with the dotted arrow of Figure 30.
The below repeats identical action, and in the first half between each charge period, turn on-switch Sa1 and Sb1 will accumulate coil L1 for the charging current that electric charge is filled with electricity accumulating unit.Then, in later half between each charge period, by connecting the switch corresponding with the two ends of each unit, utilization has been filled with the charging current of coil L1 this unit has been charged.Thereby, turn on-switch ScN and SdN+1 in the state that unit CellN is charged.The path of the charging current of this state represents with the dotted arrow of Figure 31.
At this, the Control the content of not shown control circuit is described with reference to Figure 32.Figure 32 in being illustrated between each charge period of T1～TN between the first～the N charge period not shown control circuit connect the situation of each switch in Figure 27.That is, by not shown control circuit, the corresponding switch in the hurdle that is recited as " connection " with in this figure in each switch is made as on-state, in addition switch is made as off-state.
As shown in Figure 32, turn on-switch Sa1 and Sb1 as described above in the first half of T1～TN between each charge period.Then, connect as described above the switch corresponding with the two ends of each unit in T1～TN later half between each charge period.Like this, not shown control circuit repeats the such connection control of T1～TN between the first～the N charge period described above for each switch, therefore can realize using the equilibrium charging circuit of a coil L1.
(structure of the equilibrium charging circuit of the 6th execution mode)
Figure 33 is the circuit diagram of the structure example of the equilibrium charging circuit that N the electricity accumulating unit Cell1～CellN that is connected in series charged with single coil L1.In Figure 33, the equilibrium charging circuit possesses and has: single coil L1; Switch group SW1, it is used for coil L1 is connected electrically between the input terminal 101 and reference voltage terminal that is transfused to charging voltage; And switch group SW2, it is used for the two ends of each electricity accumulating unit Cell1～CellN are electrically connected to the two ends of coil L1.The structure of the equilibrium charging circuit of this Figure 33 be in the situation that in the structure of above-mentioned Fig. 1 and Fig. 8 the quantity of unit be the structure of the equilibrium charging circuit of N.
Switch group SW1 possesses switch S a1 and switch Sb 1.The end of switch S a1 is connected with input terminal 101, and the other end is connected with the end of coil L1.One end of switch Sb 1 and reference voltage terminal sub-connection, the other end is connected with the other end of coil L1.
Switch group SW2 possesses switch S c1～ScN and switch S d2～SdN+1.The end of switch S c1～ScN and the tie point of N electricity accumulating unit Cell1～CellN and reference voltage terminal sub-connection, the other end is connected with the end of coil L1.The end of switch S d2～SdN+1 is connected with the tie point of N electricity accumulating unit Cell1～CellN and lead-out terminal 102, and the other end is connected with the other end of coil L1.
As described above, the equilibrium charging circuit of present embodiment possesses 2 switches of " 2 " extraordinarily that quantity is electricity accumulating unit quantity.That is, quantity be electricity accumulating unit quantity 2 extraordinarily the switch of " 2 " be the switch group SW2 that consisted of by 2N the switch that the two ends of each electricity accumulating unit and coil L1 are connected and be connected to the switch group SW1 of switch to consisting of between input terminal and reference voltage terminal by the two ends with coil L1.
between the charge period of not shown control circuit by during TJa (J=1～N) and during TJb (J=1～N) consist of, during TJa (connect an end of connecting coil and switch S a1 and the other end of connecting coil and the switch Sb 1 of reference voltage terminal (Vcom) of charge power supply input terminal (Vin) in J=1～N), during TJb (connect the switch S cJ of an end of the switch S dJ+1 of the high voltage terminal that connects J electricity accumulating unit and the other end of coil and the low voltage terminal that is connected J electricity accumulating unit and coil in J=1～N), monitor the voltage of each electricity accumulating unit, the length of control period T1a～TNa and during the length of T1b～TNb make the voltage of each electricity accumulating unit become equal.
the interdischarge interval of not shown control circuit by Txa during having and during Txb during Tx consist of, the length that not shown control circuit repeats to control during above-mentioned makes the voltage of each electricity accumulating unit become equal, wherein, monitor the voltage of each electricity accumulating unit, select respectively as the high electricity accumulating unit of voltage from the electricity accumulating unit of the numbering P the first electricity accumulating unit number with as the electricity accumulating unit of the numbering Q from the first electricity accumulating unit number of the low electricity accumulating unit of voltage, during this time Txa be the high voltage terminal that connect to connect the high electricity accumulating unit of voltage be connected with coil an end switch (ScP+1) and connect the low voltage terminal of the high electricity accumulating unit of voltage and the switch (SdP) of the other end of coil with electric current be filled with coil during, during this time Txb be the high voltage terminal that connect to connect the low electricity accumulating unit of voltage be connected with coil the other end switch (SdQ+1) and connect the low voltage terminal of the low electricity accumulating unit of voltage and the electric current of the switch (ScQ) of an end of coil by being accumulated in coil to the low electricity accumulating unit of voltage charge during.
(action of the equilibrium charging circuit of the 6th execution mode)
The action of the equilibrium charging circuit of the series unit that the 6th execution mode of the present invention is related then, is described.the equilibrium charging circuit of the series unit that present embodiment is related during when charging has TJa (J=1～N) and during TJb (J=1～N), monitor the voltage of each electricity accumulating unit, control period T1a～Tna and during the length of T1b～TNb make the voltage of each electricity accumulating unit become equal, wherein, during TJa (connect the end of connecting coil L1 and switch S a1 and the other end of connecting coil L1 and the switch Sb 1 of reference voltage terminal (Vcom) of charge power supply input terminal (Vin) in J=1～N), during TJb (connect the switch S dJ+1 of the high voltage terminal that connects J electricity accumulating unit and the other end of coil L1 in J=1～N) and be connected the low voltage terminal of J electricity accumulating unit and the switch S cJ of the end of coil L1.in addition, Tx during the equilibrium charging circuit of the series unit that present embodiment is related has when driving the discharge of the load that is connected with lead-out terminal 102, during during this period Tx has Txa and during Txb, the length that repeats to control during above-mentioned makes each electricity accumulating unit voltage become equal, wherein, monitor the voltage of each electricity accumulating unit, select respectively as the high electricity accumulating unit of voltage from the electricity accumulating unit of the numbering P the first electricity accumulating unit number with as the electricity accumulating unit of the numbering Q from the first electricity accumulating unit number of the low electricity accumulating unit of voltage, during this period Txa be connect the switch (ScP+1) of the high voltage terminal that connects the high electricity accumulating unit of voltage and the end of coil L1 and be connected the low voltage terminal of the high electricity accumulating unit of voltage and the switch (SdP) of the other end of coil L1 with electric current be filled with coil L1 during, during this period Txb be electric current that the switch (ScQ) of connecting the end of the low voltage terminal of the high voltage terminal that connects the low electricity accumulating unit of voltage and the switch (SdQ+1) of the other end of the coil L1 electricity accumulating unit low with being connected voltage and coil L1 will flow to above-mentioned coil L1 be filled with the low electricity accumulating unit of voltage during.
Figure 34～Figure 38 is the figure be used to the action that the 6th execution mode of the present invention is described.
The equilibrium charging circuit of the series unit that the 6th execution mode of the present invention is related is set the balance of charging with the electricity accumulating unit to series connection between the first～the N charge period and keeping the voltage between series unit by not shown control circuit.
At first, in the first half between the first charge period, not shown control circuit turn on-switch Sa1 and Sb1.Then, by input terminal 101 input input voltage vin, will accumulate coil L1 for the charging current that electric charge is filled with unit Cell1.The path of charging current represents with the dotted arrow of Figure 34.
Then, in later half between the first charge period, not shown control circuit cut-off switch Sa1 and Sb1, turn on-switch Sc1 and Sd2.Then, by the charging current that is filled with coil L1, unit Cell1 is charged.The path of charging current represents with the dotted arrow of Figure 35.
Afterwards, in the first half between the second charge period, not shown control circuit cut-off switch Sc1 and Sd2, turn on-switch Sa1 and Sb1.Then, by input terminal 101 input input voltage vin, will accumulate coil L1 for the charging current that electric charge is filled with unit Cell2.This state is identical with the state of Figure 34, and the path of charging current represents with the dotted arrow of Figure 34.
Then, in later half between the second charge period, cut-off switch Sa1 and Sb1, turn on-switch Sc2 and Sd3.Then, by the charging current that is filled with coil L1, unit Cell2 is charged.The path of charging current represents with the dotted arrow of Figure 36.
The below repeats identical action, and in the first half between each charge period, turn on-switch Sa1 and Sb1 will accumulate coil L1 for the charging current that electric charge is filled with electricity accumulating unit.Then, utilize the charging current that has been filled with coil L1 that this unit is charged by connecting the switch corresponding with the two ends of each unit in later half between each charge period.Thereby, turn on-switch ScN and SdN+1 under the state that unit CellN is charged.The path of the charging current of this state represents with the dotted arrow of Figure 37.
At this, the Control the content of not shown control circuit is described with reference to Figure 38.Figure 38 in being illustrated between each charge period of T1～TN between the first～the N charge period not shown control circuit connect the situation of each switch in Figure 33.That is, by not shown control circuit, the corresponding switch in the hurdle that is recited as " connection " with in this figure in each switch is made as on-state, in addition switch is made as off-state.
As shown in Figure 38, between each charge period in the first half of T1～TN, turn on-switch Sa1 and Sb1 as described above.Then, in T1～TN later half, connect as described above the switch corresponding with the two ends of each unit between each charge period.Like this, not shown control circuit repeats the such connection control of T1～TN between the first～the N charge period described above for each switch, therefore can realize using a coil L1 to carry out the equilibrium charging circuit of buck action.
And, each unit of series unit between each charge period in T1～TN arbitrarily during in do not discharge, therefore also play following effect: can be filled with electric charge and keep the balance of the voltage between series unit the limited series unit of charging times.
(structure of the equilibrium charging circuit of the 7th execution mode)
Figure 39 is the circuit diagram of the structure example of the equilibrium charging circuit that N the electricity accumulating unit Cell1～CellN that is connected in series charged with single coil L1.In Figure 39, the equilibrium charging circuit possesses: single coil L1; Switch group SW1, it is used for coil L1 is connected electrically between the input terminal 101 and reference voltage terminal that is transfused to charging voltage; And switch group SW2, it is used for the two ends of each electricity accumulating unit Cell1～CellN are electrically connected to the two ends of coil L1.The structure of the equilibrium charging circuit of this Figure 39 be in the situation that in the structure of above-mentioned Fig. 1 and Fig. 7 the quantity of unit be the structure of the equilibrium charging circuit of N.
The structure self of the equilibrium charging circuit of this Figure 39 is identical with the structure of the equilibrium charging circuit that describes with reference to Figure 33, but not shown control circuit is different to the part of the Control the content of switch, realizes the step-down action.
(action of the equilibrium charging circuit of the 7th execution mode)
The action of the equilibrium charging circuit of the series unit that the 7th execution mode of the present invention is related then, is described.Figure 40～Figure 45 is the figure be used to the action that the 7th execution mode of the present invention is described.
The equilibrium charging circuit of the series unit that the 7th execution mode of the present invention is related is set the balance of charging with the electricity accumulating unit to series connection between the first～the N charge period and keeping the voltage between series unit by not shown control circuit.But, in the situation that the switch that becomes connection between the first charge period and the 6th execution mode is different.
That is, in the first half between the first charge period, not shown control circuit turn on-switch Sa1 and Sd2.In this, different in the situation of the switch of connection and the 6th execution mode.Then, by input terminal 101 input input voltage vin, charging current is accumulated coil L1 and unit Cell1 is charged.The path of charging current represents with the dotted arrow of Figure 40.
Then, in later half between the first charge period, not shown control circuit is in the situation that remain open switch S a1, connect Sd2 turn on-switch Sc1.Then, by the charging current that is filled with coil L1, unit Cell1 is charged.The path of charging current represents with the dotted arrow of Figure 41.
Afterwards, in the first half between the second charge period, not shown control circuit cut-off switch Sc1 and Sd2, turn on-switch Sa1 and Sb1.Then, by input terminal 101 input input voltage vin, will accumulate coil L1 for the charging current that electric charge is filled with unit Cell2.The path of charging current represents with the dotted arrow of Figure 42.
Then, in later half between the second charge period, cut-off switch Sa1 and Sb1, turn on-switch Sc2 and Sd3.Then, by the charging current that is filled with coil L1, unit Cell2 is charged.The path of charging current represents with the dotted arrow of Figure 43.
The below repeats identical action, and after between the second charge period, in the first half between each charge period, turn on-switch Sa1 and Sb1 will accumulate coil L1 for the charging current that electric charge is filled with electricity accumulating unit.Then, utilize the charging current that has been filled with coil L1 that this unit is charged by connecting the switch corresponding with the two ends of each unit in later half between each charge period.Thereby, turn on-switch ScN and SdN+1 under the state that unit CellN is charged.The path of the charging current of this state represents with the dotted arrow of Figure 44.
At this, the Control the content of not shown control circuit is described with reference to Figure 45.Figure 45 in being illustrated between each charge period of T1～TN between the first～the N charge period not shown control circuit connect the situation of each switch in Figure 39.That is, by not shown control circuit, the corresponding switch in the hurdle that is recited as " connection " with in this figure in each switch is made as on-state, in addition switch is made as off-state.
As shown in Figure 45, between each charge period in T1～TN, first half turn on-switch Sa1 and Sd2 between the first charge period, later first half turn on-switch Sa1 and Sb1 between the second charge period.Then, connect as described above the switch corresponding with the two ends of each unit in T1～TN later half between each charge period.Like this, not shown control circuit repeats the such connection control of T1～TN between the first～the N charge period described above for each switch, therefore can realize using the equilibrium charging circuit of a coil L1.
And, each unit of series unit between each charge period in T1～TN arbitrarily during in do not discharge, therefore also play following effect: can be filled with electric charge and keep the balance of the voltage between series unit the limited series unit of charging times.
(structure of the equilibrium charging circuit of the 8th execution mode)
Figure 46 is the circuit diagram of the structure example of the equilibrium charging circuit that N the electricity accumulating unit Cell1～CellN that is connected in series charged with single coil L1.In Figure 46, the equilibrium charging circuit possesses: single coil L1; Switch group SW1, it is used for coil L1 is connected electrically between the input terminal 101 and reference voltage terminal that is transfused to charging voltage; And switch group SW2, it is used for the two ends of each electricity accumulating unit Cell1～CellN are electrically connected to the two ends of coil L1.
The structure self of the equilibrium charging circuit of this Figure 46 is identical with the structure of the equilibrium charging circuit that describes with reference to Figure 33, but not shown control circuit is different to the part of the Control the content of switch, realizes boost action.
(action of the equilibrium charging circuit of the 8th execution mode)
The action of the equilibrium charging circuit of the series unit that the 8th execution mode of the present invention is related then, is described.Figure 47～Figure 51 is the figure be used to the action that the 8th execution mode of the present invention is described.
The equilibrium charging circuit of the series unit that the 8th execution mode of the present invention is related is set the balance of charging with the electricity accumulating unit to series connection between the first～the N charge period and keeping the voltage between series unit by not shown control circuit.But, in the situation that the switch that becomes connection between the first charge period and the 6th execution mode is different.
That is, in the first half between the first charge period, not shown control circuit turn on-switch Sa1 and Sb1.Then, by input terminal 101 input input voltage vin, will accumulate coil L1 for the charging current that electric charge is filled with unit Cell1.The path of charging current represents with the dotted arrow of Figure 47.
Then, in later half between the first charge period, not shown control circuit cut-off switch Sb1 is keeping connecting turn on-switch Sd2 under the state of Sa1.Then, by the charging current that is filled with coil L1, unit Cell1 is charged.The path of charging current represents with the dotted arrow of Figure 48.
Afterwards, in the first half between the second charge period, not shown control circuit cut-off switch Sd2, turn on-switch Sb1 under the state that keeps turn on-switch Sa1.Then, by input terminal 101 input input voltage vin, will accumulate coil L1 for the charging current that electric charge is filled with unit Cell2.This state is identical with the state of Figure 47, and the path of charging current represents with the dotted arrow of Figure 47.
Then, in later half between the second charge period, cut-off switch Sa1 and Sb1, turn on-switch Sc2 and Sd3.Then, by the charging current that is filled with coil L1, unit Cell2 is charged.The path of charging current represents with the dotted arrow of Figure 49.
The below repeats identical action, and in the first half between each charge period, turn on-switch Sa1 and Sb1 will accumulate coil L1 for the charging current that electric charge is filled with electricity accumulating unit.Then, utilize the charging current that has been filled with coil L1 that this unit is charged by connecting the switch corresponding with the two ends of each unit in later half between each charge period.Thereby, turn on-switch ScN and SdN+1 under the state that unit CellN is charged.The path of the charging current of this state represents with the dotted arrow of Figure 50.
At this, the Control the content of not shown control circuit is described with reference to Figure 51.Figure 51 in being illustrated between each charge period of T1～TN between the first～the N charge period not shown control circuit connect the situation of each switch in Figure 46.That is, by not shown control circuit, the corresponding switch in the hurdle that is recited as " connection " with in this figure in each switch is made as on-state, in addition switch is made as off-state.
As shown in Figure 51, turn on-switch Sa1 and Sb1 as described above in the first half of T1～TN between each charge period.Then, between each charge period in T1～TN, later half turn on-switch Sa1 and Sd2 between the first charge period, the later later half connection switch corresponding with the two ends of each unit between the second charge period.Like this, not shown control circuit repeats the such connection control of T1～TN between the first～the N charge period described above for each switch, therefore can realize using the equilibrium charging circuit of a coil L1.
And, each unit of series unit between each charge period in T1～TN arbitrarily during in do not discharge, therefore also play following effect: can be filled with electric charge and keep the balance of the voltage between series unit the limited series unit of charging times.
(structure of the equilibrium charging circuit of the 9th execution mode)
Figure 52 is the circuit diagram of the structure example of the equilibrium charging circuit that N the electricity accumulating unit Cell1～CellN that is connected in series charged with single coil L1.In Figure 52, the equilibrium charging circuit possesses: single coil L1; Switch group SW1, it is used for coil L1 is connected electrically between the input terminal 101 and reference voltage terminal that is transfused to charging voltage; And switch group SW2, it is used for the two ends of each electricity accumulating unit Cell1～CellN are electrically connected to the two ends of coil L1.
Switch group SW1 possesses switch S a1 and switch S a2, switch S f0 and switch Sb 1.The end of switch S a1 and switch S a2 is connected with input terminal 101 respectively, and the other end is connected with the other end with the end of coil L1 respectively.One end of switch S f0 and switch Sb 1 respectively with the reference voltage terminal sub-connection, the other end respectively with the other end of coil L1 with is connected end and is connected.
Switch group SW2 possesses switch S f1～SfN.Odd number switch S f1, Sf3 in switch S f1～SfN ..., SfN-1 an end be connected with the tie point of N electricity accumulating unit Cell1～CellN, the other end is connected with the other end of coil L1.In addition, even number switch S f2, the Sf4 in switch S f1～SfN ..., SfN an end be connected with tie point and the lead-out terminal 102 of N electricity accumulating unit Cell1～CellN, the other end is connected with the end of coil L1.
As described above, the equilibrium charging circuit of present embodiment possesses the switch that adds " 4 " on the quantity that quantity is electricity accumulating unit.That is, quantity is that the switch that adds " 4 " on the quantity of electricity accumulating unit is the switch group SW2 that is made of N the switch that the two ends with each electricity accumulating unit are connected with coil L1 and the switch group SW1 that is made of four switches that input terminal 101 is connected with coil L1.switch group SW2 has: the switch S f2 that will be connected with an end of coil from the even number high voltage terminal of the first electricity accumulating unit number～SfM (switch S f2 that is connected with the even number electricity accumulating unit, Sf4, SfM (M is the following maximum even number of N)) and the switch S f1 that will be connected with the other end of coil from the odd number high voltage terminal of the first electricity accumulating unit number～SfL (switch S f1 that is connected with the odd number electricity accumulating unit, Sf3, SfL (L is the following maximum odd number of N)).
(action of the equilibrium charging circuit of the 9th execution mode)
The action of the equilibrium charging circuit of the series unit that the 9th execution mode of the present invention is related then, is described.Figure 53～Figure 58 is the figure be used to the action that the 9th execution mode of the present invention is described.
The equilibrium charging circuit of the series unit that the 9th execution mode of the present invention is related is set between the first～the N charge period that by not shown control circuit the electricity accumulating unit that is connected in series is charged and is kept the balance of the voltage between series unit.
At first, in the first half between the first charge period, not shown control circuit turn on-switch Sa1 and Sb1.Then, by input terminal 101 input input voltage vin, will accumulate coil L1 for the charging current that electric charge is filled with unit Cell1.The path of charging current represents with the dotted arrow of Figure 53.
Then, in later half between the first charge period, not shown control circuit cut-off switch Sa1 and Sb1, turn on-switch Sf0 and Sf1.Then, by the charging current that is filled with coil L1, unit Cell1 is charged.The path of charging current represents with the dotted arrow of Figure 54.
Afterwards, in the first half between the second charge period, not shown control circuit cut-off switch Sf0 and Sf1, turn on-switch Sa2 and Sf0.Then, by input terminal 101 input input voltage vin, will accumulate coil L1 for the charging current that electric charge is filled with unit Cell2.The path of charging current represents with the dotted arrow of Figure 55.The path of the charging current in the path of the charging current in the situation of Figure 55 and the situation of Figure 53 is opposite.
Then, in later half between the second charge period, cut-off switch Sa2 and Sf0, turn on-switch Sf1 and Sf2.Then, by the charging current that is filled with coil L1, unit Cell2 is charged.The path of charging current represents with the dotted arrow of Figure 56.
Afterwards, in the first half between the 3rd charge period, not shown control circuit cut-off switch Sf1 and Sf2, turn on-switch Sa1 and Sb1.Then, by input terminal 101 input input voltage vin, will accumulate coil L1 for the charging current that electric charge is filled with unit Cell3.This state is identical with the state of Figure 53, and the path of charging current represents with the dotted arrow of Figure 53.
Then, in later half between the 3rd charge period, cut-off switch Sa1 and Sb1, turn on-switch Sf2 and Sf3.Then, by the charging current that is filled with coil L1, unit Cell3 is charged.The path of charging current represents with the dotted arrow of Figure 57.
The below repeats identical action, and the first half between each charge period alternately changes the flow direction of the charging current of accumulating coil L1 between the odd number charge period and between the even number charge period.Then, in later half between each charge period, utilize the charging current that has been filled with coil L1 that this unit is charged by connecting the switch corresponding with the two ends of each unit.Thereby, between the even number charge period that unit CellN is charged in turn on-switch SfN-1 and SfN.The path of the charging current of this state represents with the dotted arrow of Figure 58.
At this, the Control the content of not shown control circuit is described with reference to Figure 59.Figure 59 in being illustrated between each charge period of T1～TN between the first～the N charge period not shown control circuit connect the situation of each switch in Figure 52.That is, by not shown control circuit, the corresponding switch in the hurdle that is recited as " connection " with in this figure in each switch is made as on-state, in addition switch is made as off-state.
As shown in Figure 59, first half turn on-switch Sa1, Sb1 between the odd number charge period, first half turn on-switch Sa2, Sf0 between the even number charge period alternately change the flow direction of the charging current of accumulating coil L1.Then, connect as described above the switch corresponding with the two ends of each unit in T1～TN later half between each charge period.
namely, between the charge period of not shown control circuit by T1 between charge period, T3 between T2 and charge period between charge period～TN consists of, between this charge period, T1 is by only with switch S a1, Sb1 be made as connect with charging current be filled with coil L1 during T1a and only with switch S f0, Sf1 be made as connect the electric current will be filled with coil be filled with the first electricity accumulating unit during the T1b formation, between this charge period, T2 is similarly by only with switch S a2, Sf0 be made as connect with charging current be filled with coil L1 during T2a and only with switch S f1, Sf2 be made as connect the electric current will be filled with coil L1 be filled with the second electricity accumulating unit during the T2b formation, T1 between T3～TN and charge period between this charge period, T2 is similarly to switch Sa1, Sb1, Sa2, Sf0 and Sf2～SfN carry out break-make the electric current of coil L1 are filled with the three～the N electricity accumulating unit.And, monitor the voltage of each electricity accumulating unit, the length of control period T1a～TNa and during the length of T1b～TNb make the voltage of each electricity accumulating unit become equal.
in addition, the interdischarge interval of not shown control circuit by Txa during having and during Txb during Tx consist of, not shown control circuit is when driving with load that lead-out terminal 102 is connected, the length that repeats to control during above-mentioned makes the voltage of each electricity accumulating unit become equal, wherein, monitor the voltage of each electricity accumulating unit, select respectively as the high electricity accumulating unit of voltage from the numbering P of the first electricity accumulating unit number with as the electricity accumulating unit that adds up to odd number from the numbering Q of the first electricity accumulating unit number of the low electricity accumulating unit of voltage, during this period Txa be connect the switch S fP of the high voltage terminal that connects the high P electricity accumulating unit of voltage and the other end of coil L and be connected the low voltage terminal of the high P electricity accumulating unit of voltage and the switch S f (P-1) of the end of coil L with electric current be filled with coil L1 during, during this period Txb be connect the switch S fQ of the high voltage terminal that connects the low Q electricity accumulating unit of voltage and the other end of coil L and be connected the low voltage terminal of the low Q electricity accumulating unit of voltage and the switch S f (Q-1) of an end of coil with coil current be filled with voltage low unit during.
Like this, not shown control circuit repeats the such connection control of T1～TN between the first～the N charge period described above for each switch, therefore can realize using single coil L1 to carry out the equilibrium charging circuit of buck action.
In addition, each unit of series unit between each charge period in T1～TN arbitrarily during in do not discharge, therefore also play following effect: can be filled with electric charge and keep the balance of the voltage between series unit the limited series unit of charging times.
Therefore and the quantity of switch is to add the quantity of " 4 " at the quantity N of electricity accumulating unit, can be with few parts number realize connecting equilibrium charging circuit of electricity accumulating unit.
(distortion of the 9th execution mode)
In the above-described 9th embodiment, not shown control circuit also can change the control to switch in T1 between charge period as follows.That is, Figure 60～Figure 62 means the figure of the break-make state of a control of switch S a1, Sa2 that not shown in the above-described 9th embodiment control circuit controls, Sb1, Sf0, Sf1, Sf2.
When reference Figure 60, in the first half of T1, turn on-switch Sa1 and Sb1 accumulate coil L1 with electric current between charge period.Then, in T1 later half, utilize the electric current of accumulating coil L1 that unit Cell1 is charged by turn on-switch Sf0 and Sf1 between charge period.
Then, in the first half of T2, turn on-switch Sa2 and Sf0 accumulate coil L1 with electric current between charge period.Then, in T2 later half, utilize the electric current of accumulating coil L1 that unit Cell2 is charged by turn on-switch Sf1 and Sf2 between charge period.
By making as described above switch on and off, can realize the buck action of equilibrium charging circuit.
In addition, when reference Figure 61, in the first half of T1, turn on-switch Sa1 and Sf1 accumulate coil L1 with electric current between charge period.Then, in T1 later half, utilize the electric current of accumulating coil L1 that unit Cell1 is charged by turn on-switch Sf0 and Sf1 between charge period.
Then, in the first half of T2, turn on-switch Sa2 and Sf0 accumulate coil L1 with electric current between charge period.Then, in T2 later half, utilize the electric current of accumulating coil L1 that unit Cell2 is charged by turn on-switch Sf1 and Sf2 between charge period.
By making as described above switch on and off, can realize the step-down action of equilibrium charging circuit.
And when reference Figure 62, in the first half of T1, turn on-switch Sa1 and Sb1 accumulate coil L1 with electric current between charge period.Then, in T1 later half, utilize the electric current of accumulating coil L1 that unit Cell1 is charged by turn on-switch Sa1 and Sf1 between charge period.
Then, in the first half of T2, turn on-switch Sa2 and Sf0 accumulate coil L1 with electric current between charge period.Then, in T2 later half, utilize the electric current of accumulating coil L1 that unit Cell2 is charged by turn on-switch Sf1 and Sf2 between charge period.
By making as described above switch on and off, can realize the boost action of equilibrium charging circuit.
In addition, can carry out odd number electricity accumulating unit and even number electricity accumulating unit alternately are made as the control of charging object, also can carry out following control: with the whole charging objects that first are made as of the side arbitrarily in odd number electricity accumulating unit and even number electricity accumulating unit, namely sequentially complete arbitrarily charging with different order, with whole charging objects that are made as of the opposing party, namely sequentially complete arbitrarily charging with different order afterwards.In the situation that adopt the former control, the flow direction of electric current changes when each change is made as the electricity accumulating unit of charging object, in the situation that adopt the latter's control, only from odd number to even number (perhaps on the contrary) when switching the flow direction of electric current change once.Thereby, to compare with the situation of the control of adopting the former, the efficient of the power consumption in the situation of the employing latter's control is high.
(structure of the equilibrium charging circuit of the tenth execution mode)
Figure 63 is the circuit diagram of the structure example of the equilibrium charging circuit that N the electricity accumulating unit Cell1～CellN that is connected in series charged with single coil L1.In Figure 63, the equilibrium charging circuit possesses single coil L1, switch group SW1, it is used for coil L1 is connected electrically between the input terminal 101 and reference voltage terminal that is transfused to charging voltage, and switch group SW2, it is used for the two ends of each electricity accumulating unit Cell1～CellN are electrically connected to coil L1.
Switch group SW1 possesses switch S a1 and switch S a2, switch Sb 2.The end of switch S a1 and switch S a2 is connected with input terminal 101 respectively, and the other end is connected with the other end with the end of coil L1 respectively.One end of switch Sb 2 is connected with reference voltage, and the other end is connected with the other end of coil L1.
Switch group SW2 possesses switch S c3～ScN+1, switch S d2～SdN.The end of switch S c3～ScN+1 is connected with the tie point of N electricity accumulating unit Cell2～CellN and lead-out terminal 102, and the other end is connected with the end of coil L1.The end of switch S d2～SdN is connected with the tie point of N electricity accumulating unit Cell1～CellN, and the other end is connected with the other end of coil L1.
As described above, the equilibrium charging circuit of present embodiment is the structure of having deleted switch S c2 in the equilibrium charging circuit of the 8th execution mode that reference Figure 46 describes.
(action of the equilibrium charging circuit of the tenth execution mode)
The action of the equilibrium charging circuit of the series unit that the tenth execution mode of the present invention is related then, is described.Figure 64～Figure 69 is the figure be used to the action that the tenth execution mode of the present invention is described.
The equilibrium charging circuit of the series unit that the tenth execution mode of the present invention is related is set between the first～the N charge period that by not shown control circuit the electricity accumulating unit that is connected in series is charged and is kept the balance of the voltage between series unit.
In first half between the first charge period, not shown control circuit turn on-switch Sa1 and Sd2.Then, by input terminal 101 input input voltage vin, charging current is accumulated coil L1 and unit Cell1 is charged.The path of charging current represents with the dotted arrow of Figure 64.
Then, in later half between the first charge period, not shown control circuit cut-off switch Sa1 is keeping connecting turn on-switch Sb2 under the state of Sd2.Then, utilize the charging current that has been filled with coil L1 that unit Cell1 is charged.The path of charging current represents with the dotted arrow of Figure 65.
Afterwards, in the first half between the second charge period, not shown control circuit cut-off switch Sd2, turn on-switch Sa2 and Sb2.Then, by input terminal 101 input input voltage vin, will accumulate coil L1 for the charging current that electric charge is filled with unit Cell2.The path of charging current represents with the dotted arrow of Figure 66.
Then, in later half between the second charge period, cut-off switch Sa2 and Sb2, turn on-switch Sc3 and Sd2.Then, utilize the charging current that has been filled with coil L1 that unit Cell2 is charged.The path of charging current represents with the dotted arrow of Figure 67.
The below repeats identical action, and after between the second charge period, first half turn on-switch Sa2 and Sb1 between each charge period will accumulate coil L1 for the charging current that electric charge is filled with electricity accumulating unit.Then, utilize the charging current that has been filled with coil L1 that this unit is charged by connecting the switch corresponding with the two ends of each unit in later half between each charge period.Thereby, turn on-switch ScN+1 and SdN under the state that unit CellN is charged.The path of the charging current of this state represents with the dotted arrow of Figure 68.
At this, the Control the content of not shown control circuit is described with reference to Figure 69.Figure 69 in being illustrated between each charge period of T1～TN between the first～the N charge period not shown control circuit connect the situation of each switch in Figure 63.That is, by not shown control circuit, the corresponding switch in the hurdle that is recited as " connection " with in this figure in each switch is made as on-state, in addition switch is made as off-state.
As shown in Figure 69, between each charge period in T1～TN, first half turn on-switch Sa1 and Sd2 between the first charge period, later first half turn on-switch Sa2 and Sb1 between the second charge period.Then, connect as described above the switch corresponding with the two ends of each unit in T1～TN later half between each charge period.Like this, not shown control circuit repeats the such connection control of T1～TN between the first～the N charge period described above for each switch, therefore can realize using the equilibrium charging circuit of a coil L1.
In addition, between the first above-mentioned charge period, T1 is the step-down action, therefore in the situation that input voltage vin than the charging voltage of unit Cell1 large and to the charging current of unit Cell1 towards with to the charging current of unit Cell2～N towards also can be different, can use present embodiment.
(structure of the equilibrium charging circuit of the 11 execution mode)
Figure 70 is the circuit diagram of the structure example of the equilibrium charging circuit that N the electricity accumulating unit Cell1～CellN that is connected in series charged with single coil L1.In Figure 70, the equilibrium charging circuit possesses: single coil L1, and switch group SW1, it is used for the input terminal 101 of input charging voltage is electrically connected to coil L1; And switch group SW2, it is used for the two ends of each electricity accumulating unit Cell1～CellN are electrically connected to coil L1.
Switch group SW1 possesses switch S a1 and switch Sb 2.The end of switch S a1 is connected with input terminal 101, and the other end is connected with the end of coil L1.One end of switch Sb 2 and reference voltage terminal sub-connection, the other end is connected with the end of coil L1.
Switch group SW2 possesses switch S c3～ScN+1 and switch S d2～SdN.The end of switch S c3～ScN+1 is connected with the tie point of N electricity accumulating unit Cell2～CellN and lead-out terminal 102, and the other end is connected with the end of coil L1.The end of switch S d2～SdN is connected with the tie point of N electricity accumulating unit Cell1～CellN, and the other end is connected with the other end of coil L1.
As described above, the equilibrium charging circuit of present embodiment is the structure of having deleted switch S c2 in the equilibrium charging circuit of the 8th execution mode that reference Figure 46 describes.
(action of the equilibrium charging circuit of the 11 execution mode)
The action of the equilibrium charging circuit of the series unit that the 11 execution mode of the present invention is related then, is described.Figure 71～Figure 76 is the figure be used to the action that the 11 execution mode of the present invention is described.
The equilibrium charging circuit of the series unit that the 11 execution mode of the present invention is related is set the balance of charging with the electricity accumulating unit to series connection between the first～the N charge period and keeping the voltage between series unit by not shown control circuit.
In first half between the first charge period, not shown control circuit turn on-switch Sa1 and Sd2.Then, by input terminal 101 input input voltage vin, charging current is accumulated coil L1 and unit Cell1 is charged.The path of charging current represents with the dotted arrow of Figure 71.
Then, in later half between the first charge period, not shown control circuit cut-off switch Sa1, turn on-switch Sb2 under the state that keeps turn on-switch Sd2.Then, by the charging current that is filled with coil L1, unit Cell1 is charged.The path of charging current represents with the dotted arrow of Figure 72.
Afterwards, in the first half between the second charge period, not shown control circuit remains connection with switch S d2 and Sb2.Thus, Cell1 discharges from the unit, will accumulate coil L1 for the charging current that electric charge is filled with unit Cell2.The path of charging current represents with the dotted arrow of Figure 73.
Then, in later half between the second charge period, cut-off switch Sb2, turn on-switch Sc3 under the state that keeps turn on-switch Sd2.Then, by the charging current that is filled with coil L1, unit Cell2 is charged.The path of charging current represents with the dotted arrow of Figure 74.
The below repeats identical action, and after between the second charge period, first half turn on-switch Sb2 and Sd2 between each charge period will accumulate coil L1 for the charging current that electric charge is filled with other unit Cell2～CellN by discharging from unit Cell.Thereby, turn on-switch ScN+1 and SdN under the state that unit CellN is charged.The path of the charging current of this state represents with the dotted arrow of Figure 75.
At this, the Control the content of not shown control circuit is described with reference to Figure 76.Figure 76 in being illustrated between each charge period of T1～TN between the first～the N charge period not shown control circuit connect the situation of each switch in Figure 70.That is, by not shown control circuit, the corresponding switch in the hurdle that is recited as " connection " with in this figure in each switch is made as on-state, in addition switch is made as off-state.
As shown in Figure 76, between each charge period in T1～TN, first half turn on-switch Sa1 and Sd2 between the first charge period charge to unit Cell1, and first half turn on-switch Sb2 and Sd2 later between the second charge period will accumulate coil L1 for the charging current that electric charge is filled with other unit Cell2～CellN by the discharge from unit Cell1.Then, T1～TN's is later half between each charge period, connects as described above the switch corresponding with the two ends of each unit other unit Cell2～CellN is charged.Like this, not shown control circuit repeats the such connection control of T1～TN between the first～the N charge period described above for each switch, therefore can realize using the equilibrium charging circuit of a coil L1.
In addition, between the first above-mentioned charge period, T1 is step-down action, therefore in the situation that input voltage vin is larger and allow unit Cell1 discharge than the charging voltage of unit Cell1, can use present embodiment.
(structure of the equilibrium charging circuit of the 12 execution mode)
Figure 77 is the circuit diagram of the structure example of the equilibrium charging circuit that N the electricity accumulating unit Cell1～CellN that is connected in series charged with single coil L1.In Figure 77, the equilibrium charging circuit possesses: single coil L1, and switch group SW1, it is electrically connected to coil L1 for the input terminal 101 that will be transfused to charging voltage; And switch group SW2, it is used for the two ends of each electricity accumulating unit Cell1～CellN are electrically connected to coil L1.
Switch group SW1 possesses switch S a1 and switch Sb 2.The end of switch S a1 is connected with input terminal 101, and the other end is connected with the end of coil L1.One end of switch Sb 2 and reference voltage terminal sub-connection, the other end is connected with the end of coil L1.
Switch group SW2 possesses switch S c3～ScN+1 and switch S d2～SdN.The end of switch S c3～ScN+1 is connected with the tie point of N electricity accumulating unit Cell2～CellN and lead-out terminal 102, and the other end is connected with the end of coil L1.The end of switch S d2～SdN is connected with the tie point of N electricity accumulating unit Cell1～CellN, and the other end is connected with the other end of coil L1.
As described above, the equilibrium charging circuit of present embodiment is the structure of having deleted switch S c2 in the equilibrium charging circuit of the 8th execution mode that reference Figure 46 describes.
The structure self of the equilibrium charging circuit of this Figure 77 is identical with the structure of the equilibrium charging circuit that describes with reference to Figure 70, but not shown control circuit is different to the part of the Control the content of switch.
(action of the equilibrium charging circuit of the 12 execution mode)
The action of the equilibrium charging circuit of the series unit that the 12 execution mode of the present invention is related then, is described.Figure 77～Figure 84 is the figure be used to the action that the 12 execution mode of the present invention is described.
The equilibrium charging circuit of the series unit that the 12 execution mode of the present invention is related is set the balance of charging with the electricity accumulating unit to series connection between the first～the N charge period and keeping the voltage between series unit by not shown control circuit.
In first half between the first charge period, not shown control circuit turn on-switch Sa1 and Sd2.Then, by input terminal 101 input input voltage vin, charging current is accumulated coil L1 and unit Cell1 is charged.The path of charging current represents with the dotted arrow of Figure 78.
Then, in later half between the first charge period, not shown control circuit cut-off switch Sa1, turn on-switch Sb2 under the state that keeps turn on-switch Sd2.Then, utilize the charging current that has been filled with coil L1 that unit Cell1 is charged.The path of charging current represents with the dotted arrow of Figure 79.
Afterwards, in the first half between the second charge period, not shown control circuit remains connection with switch S d2 and Sb2.Thus, Cell1 discharges from the unit, will accumulate coil L1 for the charging current that electric charge is filled with unit Cell2.The path of charging current represents with the dotted arrow of Figure 80.
Then, in later half between the second charge period, cut-off switch Sb2, turn on-switch Sc3 under the state that keeps turn on-switch Sd2.Then, by the charging current that is filled with coil L1, unit Cell2 is charged.The path of charging current represents with the dotted arrow of Figure 81.
Then, after between the 3rd charge period, in first half between charge period, not shown control circuit is made as switch Sb 2 and switch S d3～SdN to connect and discharges from unit Cell2～CellN-1, will accumulate coil L1 for the charging current that electric charge is filled with unit Cell3～CellN.Thereby between charge period in TN, in the first half of TN, not shown control circuit is made as switch Sb 2 and SdN to connect and discharges from unit Cell1N-1 between charge period, will accumulate coil L1 for the charging current that electric charge is filled with unit CellN.The path of charging current represents with the dotted arrow of Figure 82.
Then, in TN later half, not shown control circuit is made as connection with switch S dN and ScN+1 between charge period, utilizes the charging current that has been filled with coil L1 that unit CellN is charged.The path of charging current represents with the dotted arrow of Figure 83.
At this, the Control the content of not shown control circuit is described with reference to Figure 84.Figure 84 in being illustrated between each charge period of T1～TN between the first～the N charge period not shown control circuit connect the situation of each switch in Figure 77.That is, by not shown control circuit, the corresponding switch in the hurdle that is recited as " connection " with in this figure in each switch is made as on-state, in addition switch is made as off-state.
As Figure 84, between each charge period in T1～TN, first half turn on-switch Sa1 and Sd2 between the first charge period charge to unit Cell1, later first half between the second charge period is also connected except switch Sb 2 and is used for making the switch that unit Cell1～CellN-1 discharges successively that charging current is accumulated coil L1.Then, T1～TN's is later half between each charge period, connects as described above the switch corresponding with the two ends of each unit unit Cell2～CellN is charged.Like this, not shown control circuit repeats the such connection control of T1～TN between the first～the N charge period described above for each switch, therefore can realize using the equilibrium charging circuit of a coil L1.
The unit that discharges in the 11 above-mentioned execution mode is fixed as unit Cell1, and on the other hand, the unit of discharge is unfixing in the present embodiment, therefore can reduce the burden of unit Cell1.
In addition, in the situation that allow unit Cell1～CellN-1 discharge, can use present embodiment.
(structure of the equilibrium charging circuit of the 13 execution mode)
Figure 85 is the circuit diagram of the structure example of the equilibrium charging circuit that N the electricity accumulating unit Cell1～CellN that is connected in series charged with single coil L1.In Figure 85, the equilibrium charging circuit possesses: single coil L1, and switch group SW1, it is electrically connected to coil L1 for the input terminal 101 that will be transfused to charging voltage; Switch group SW2, it is used for the two ends of each electricity accumulating unit Cell1～CellN are electrically connected to coil L1; Diode D1; And capacitor C 1.
Switch group SW1 possesses switch S a1 and switch Sb 2.The end of switch S a1 is connected with input terminal 101, and the other end is connected with the end of coil L1.One end of switch Sb 2 and reference voltage terminal sub-connection, the other end is connected with the end of coil L1.
Switch group SW2 possesses switch S c3～ScN+1 and switch S d2～SdN.The end of switch S c3～ScN+1 is connected with the tie point of N electricity accumulating unit Cell2～CellN and lead-out terminal 102, and the other end is connected with the end of coil L1.The end of switch S d2～SdN is connected with the tie point of N electricity accumulating unit Cell1～CellN, and the other end is connected with the other end of coil L1.
The anode of diode D1 is connected with the end of switch S d2, and negative electrode is connected in the tie point of electricity accumulating unit Cell1 and electricity accumulating unit Cell2.This diode D1 arranges from the discharge of electricity accumulating unit Cell1 in order to suppress.
Capacitor C 1 is connected between the anode and reference voltage terminal of diode D1.This capacitor C 1 is set in order to accumulate electric charge temporarily, utilizes the discharge of the electric charge of accumulating to accumulate coil L1 for the electric current that electricity accumulating unit Cell2～CellN is charged.
(action of the equilibrium charging circuit of the 13 execution mode)
The action of the equilibrium charging circuit of the series unit that the 13 execution mode of the present invention is related then, is described.Figure 86～Figure 91 is the figure be used to the action that the 13 execution mode of the present invention is described.
The equilibrium charging circuit of the series unit that the 13 execution mode of the present invention is related is set the balance of charging with the electricity accumulating unit to series connection between the first～the N charge period and keeping the voltage between series unit by not shown control circuit.
In first half between the first charge period, not shown control circuit turn on-switch Sa1 and Sd2.Then, by input terminal 101 input input voltage vin, charging current is accumulated coil L1 and unit Cell1 is charged.The path of charging current represents with the dotted arrow of Figure 86.When this unit Cell1 is charged, accumulate electric charge in capacitor C 1.
Then, in later half between the first charge period, not shown control circuit cut-off switch Sa1, turn on-switch Sb2 under the state that keeps turn on-switch Sd2.Then, utilize the charging current that has been filled with coil L1 that unit Cell1 is charged.The path of charging current represents with the dotted arrow of Figure 87.
Afterwards, in the first half between the second charge period, not shown control circuit remains connection with switch S d2 and Sb2.Thus, discharge from capacitor C 1, will accumulate coil L1 for the charging current that electric charge is filled with unit Cell2.At this moment, suppress from the discharge of unit Cell1 by diode D1.The path of charging current represents with the dotted arrow of Figure 88.
Then, in later half between the second charge period, cut-off switch Sb2, turn on-switch Sc3 under the state that keeps turn on-switch Sd2.Then, utilize the charging current that has been filled with coil L1 that unit Cell2 is charged.The path of charging current represents with the dotted arrow of Figure 89.
Then, after between the 3rd charge period, in first half between charge period, not shown control circuit is made as switch Sb 2 and switch S d2 to connect and discharges from capacitor C 1, will accumulate coil L1 for the charging current that electric charge is filled with unit Cell3～CellN.Thereby between charge period in TN, between charge period in the first half of TN, not shown control circuit is made as switch Sb 2 and Sd2 to connect and discharges from capacitor C 1, will accumulate coil L1 for the charging current that electric charge is filled with unit CellN.This state is identical with the state of Figure 88, and the path of charging current represents with the dotted arrow of Figure 88.
Then, in TN later half, not shown control circuit is made as connection with switch S dN and ScN+1 between charge period, utilizes the charging current that has been filled with coil L1 that unit CellN is charged.The path of charging current represents with the dotted arrow of Figure 90.
At this, the Control the content of not shown control circuit is described with reference to Figure 91.Figure 91 in being illustrated between each charge period of T1～TN between the first～the N charge period not shown control circuit connect the situation of each switch in Figure 85.That is, by not shown control circuit, the corresponding switch in the hurdle that is recited as " connection " with in this figure in each switch is made as on-state, in addition switch is made as off-state.
As Figure 91, between each charge period in T1～TN, first half turn on-switch Sa1 between the first charge period and Sd2 charge to unit Cell1 and electric charge are accumulated capacitor C 1, and first half turn on-switch Sb2 and Sd2 later between the second charge period accumulate coil L1 with charging current.Then, T1～TN's is later half between each charge period, connects as described above the switch corresponding with the two ends of each unit unit Cell2～CellN is charged.Like this, not shown control circuit repeats the such connection control of T1～TN between the first～the N charge period described above for each switch, therefore can realize using the equilibrium charging circuit of a coil L1.
In addition, in the situation that needs suppress the discharge of unit Cell1, can use present embodiment.
(structure of the equilibrium charging circuit of the 14 execution mode)
Figure 92 is the circuit diagram of the structure example of the equilibrium charging circuit that N the electricity accumulating unit Cell1～CellN that is connected in series charged with single coil L1.In Figure 92, the equilibrium charging circuit possesses: single coil L1, and switch group SW1, it is electrically connected to coil L1 for the input terminal 101 that will be transfused to charging voltage, switch group SW2, it is used for the two ends of each electricity accumulating unit Cell1～CellN are electrically connected to coil L1; N-1 diode D1～DN-1 and N-1 capacitor C 1～CN-1.
Switch group SW1 possesses switch S a1 and switch Sb 2.The end of switch S a1 is connected with input terminal 101, and the other end is connected with the end of coil L1.One end of switch Sb 2 and reference voltage terminal sub-connection, the other end is connected with the end of coil L1.
Switch group SW2 possesses switch S c3～ScN+1 and switch S d2～SdN.The end of switch S c3～ScN+1 is connected with the tie point of N electricity accumulating unit Cell2～CellN and lead-out terminal 102, and the other end is connected with the end of coil L1.The end of switch S d2～SdN is connected with the tie point of N electricity accumulating unit Cell1～CellN, and the other end is connected with the other end of coil L1.
Diode D1～DN-1 and each switch S d2～SdN and each electricity accumulating unit Cell1～CellN-1 arrange accordingly.The anode of diode D1～DN-1 connects with the end of corresponding switch S d2～SdN, and negative electrode is connected in the tie point of corresponding electricity accumulating unit and other electricity accumulating unit.These diodes D1～DN-1 arranges from the discharge of corresponding electricity accumulating unit in order to suppress.
Capacitor C 1～CN-1 is set is in order to accumulate electric charge temporarily, will accumulate coil L1 for the electric current that corresponding electricity accumulating unit Cell2～CellN is charged by the discharge of the electric charge accumulated.
(action of the equilibrium charging circuit of the 14 execution mode)
The action of the equilibrium charging circuit of the series unit that the 14 execution mode of the present invention is related then, is described.Figure 93～Figure 99 is the figure be used to the action that the 14 execution mode of the present invention is described.
The equilibrium charging circuit of the series unit that the 14 execution mode of the present invention is related is set the balance of charging with the electricity accumulating unit to series connection between the first～the N charge period and keeping the voltage between series unit by not shown control circuit.
In first half between the first charge period, not shown control circuit turn on-switch Sa1 and Sd2.Then, by input terminal 101 input input voltage vin, charging current is accumulated coil L1 and unit Cell1 is charged.The path of charging current represents with the dotted arrow of Figure 93.When this unit Cell1 is charged, accumulate electric charge in capacitor C 1.
Then, in later half between the first charge period, not shown control circuit cut-off switch Sa1, turn on-switch Sb2 under the state that keeps turn on-switch Sd2.Then, utilize the charging current that has been filled with coil L1 that unit Cell1 is charged.The path of charging current represents with the dotted arrow of Figure 94.
Afterwards, in the first half between the second charge period, not shown control circuit remains connection with switch S d2 and Sb2.Thus, discharge from capacitor C 1, will accumulate coil L1 for the charging current that electric charge is filled with unit Cell2.At this moment, suppress from the discharge of unit Cell1 by diode D1.The path of charging current represents with the dotted arrow of Figure 95.
Then, in later half between the second charge period, cut-off switch Sb2, turn on-switch Sc3 under the state that keeps turn on-switch Sd2.Then, utilize the charging current that has been filled with coil L1 that unit Cell2 is charged.The path of charging current represents with the dotted arrow of Figure 96.
Then, after between the 3rd charge period, in first half between charge period, not shown control circuit is made as connection with switch Sb 2 and the switch corresponding with capacitor C2～CN-1, will accumulate coil L1 for the charging current that electric charge is filled with unit Cell3～CellN from this discharging capacitors.Thereby in TN, in the first half of TN, not shown control circuit is made as connection with switch Sb 2 and SdN between charge period between charge period, and CN-1 discharges from capacitor, will accumulate coil L1 for the charging current that electric charge is filled with unit CellN.The path of charging current represents with the dotted arrow of Figure 97.
Then, in TN later half, not shown control circuit is made as connection with switch S dN and ScN+1 between charge period, utilizes the charging current that has been filled with coil L1 that unit CellN is charged.The path of charging current represents with the dotted arrow of Figure 98.
At this, the Control the content of not shown control circuit is described with reference to Figure 99.Figure 99 in being illustrated between each charge period of T1～TN between the first～the N charge period not shown control circuit connect the situation of each switch in Figure 92.That is, by not shown control circuit, the corresponding switch in the hurdle that is recited as " connection " with in this figure in each switch is made as on-state, in addition switch is made as off-state.
As Figure 99, between each charge period in T1～TN, first half turn on-switch Sa1 between the first charge period and Sd2 charge to unit Cell1 and electric charge are accumulated capacitor C 1, and later first half turn on-switch Sb2 and the switch corresponding with each capacitor are accumulated coil L1 with charging current between the second charge period.Then, T1～TN's is later half between each charge period, connects as described above the switch corresponding with the two ends of each unit unit Cell2～CellN is charged.Like this, not shown control circuit repeats the such connection control of T1～TN between the first～the N charge period described above for each switch, therefore can realize using the equilibrium charging circuit of a coil L1.
In addition, in the situation that needs suppress the discharge of unit Cell1～CellN, can use present embodiment.
(the unit balance during discharge one of is controlled)
Carried out the series unit of charging about the equilibrium charging circuit by above-mentioned series unit, when load drives when discharge, when concentrating on the life-span that shortens sometimes this unit when the specific electricity accumulating unit that consists of series unit discharges.Therefore, when series unit discharges, wish to make the balance of charging voltage ground of each electricity accumulating unit that consists of series unit to discharge.
For the balance of charging voltage ground that makes electricity accumulating unit discharges, as long as retrieve the electricity accumulating unit that the high electricity accumulating unit of charging voltage and charged electrical force down and carry out following action by current monitoring circuit.
For example, in the equilibrium charging circuit that reference Figure 33, Figure 39, Figure 46 describe respectively, (the electricity accumulating unit CellQ that P=1～N) and voltage are low (Q=1～N, but except P) carries out following action (1) and (2) and makes each electricity accumulating unit balance of voltage the high electricity accumulating unit CellP of retrieval voltage.
(1) between charge period in Txa turn on-switch ScP+1, switch S dP from electricity accumulating unit CellP, electric current is accumulated coil L1.
(2) between charge period in Txb turn on-switch ScQ, switch S dQ+1 utilize during accumulate coil L1 in Txa electric current electricity accumulating unit CellQ is charged.
That is, as Figure 100, between charge period the first half of Tx during in Txa, come turn on-switch SdP and switch S cP+1 by not shown control circuit.In addition, during Tx later half in Txb, come turn on-switch SdQ+1 and switch S cQ by not shown control circuit between charge period.
(the unit balance control during discharge two)
The equilibrium charging circuit that describes respectively about reference Figure 33, Figure 39, Figure 46, when discharge as long as the high electricity accumulating unit CellP of retrieval voltage (the electricity accumulating unit CellQ that P=1～N) and voltage are low (Q=1～N, but except P) and control switch as follows.For example, between charge period the first half of Tx during in Txa, come turn on-switch ScP and switch S dP+1 by not shown control circuit, from electricity accumulating unit CellP, electric current is accumulated coil L1.Then, during Tx later half in Txb, come turn on-switch ScQ+1 and switch S dQ by not shown control circuit between charge period, utilize the electric current of accumulating coil L1 that electricity accumulating unit CellQ is charged.
That is, if Q〉1, as Figure 101 between charge period the first half of Tx during in Txa, come turn on-switch ScP and switch S dP+1 by not shown control circuit.In addition, during Tx later half in Txb, come turn on-switch SdQ and switch S cQ+1 by not shown control circuit between charge period.Wherein, if Q=1 during Tx later half in Txb, comes turn on-switch Sb1 and switch S c2 by not shown control circuit between charge period as Figure 102.
(the unit balance control during discharge three)
About the equilibrium charging circuit that reference Figure 52 describes, the unit balance during discharge is restricted to electric charge and moves from the odd number electricity accumulating unit to the even number electricity accumulating unit, and is perhaps opposite with it.The high electricity accumulating unit CellP of retrieval voltage (P=1～N) and the low electricity accumulating unit CellQ (Q=1～N and P+Q are odd number) of voltage, and carry out following action (1) and (2) make each electricity accumulating unit balance of voltage.
(1) between charge period the first half of Tx during in Txa turn on-switch SfP-1, switch S fP from electricity accumulating unit CellP, electric current is accumulated coil L1.
(2) between charge period during Tx later half in Txb turn on-switch SfQ-1, switch S fQ utilize during accumulate coil L1 in Txa electric current electricity accumulating unit CellQ is charged.
That is, as Figure 103, between charge period the first half of Tx during in Txa, come turn on-switch SfP-1 and switch S fP by not shown control circuit.In addition, during Tx later half in Txb, come turn on-switch SfQ-1 and switch S fQ by not shown control circuit between charge period.
(the unit balance control during discharge four)
The equilibrium charging circuit that describes about reference Figure 63, when discharge as long as the high electricity accumulating unit CellP of retrieval voltage (the electricity accumulating unit CellQ that P=1～N) and voltage are low (Q=1～N, but except P) and control switch as Figure 104～Figure 106.
That is, if P〉1, as Figure 104, between charge period the first half of Tx during in Txa, come turn on-switch SdP and switch S cP+1 by not shown control circuit.In addition, during Tx later half in Txb, come turn on-switch ScQ and switch S dQ+1 by not shown control circuit between charge period.
Wherein, if P=1, as Figure 105, between charge period the first half of Tx during in Txa, come turn on-switch Sb2 and switch S d2 by not shown control circuit.In addition, during Tx later half in Txb, come turn on-switch ScQ and switch S dQ+1 by not shown control circuit between charge period.
And, if Q=1, as Figure 106, between charge period the first half of Tx during in Txa, come turn on-switch SdP and switch S cP+1 by not shown control circuit.In addition, during Tx later half in Txb, come turn on-switch Sd2 and switch Sb 2 by not shown control circuit between charge period.
(the unit balance control during discharge five)
The equilibrium charging circuit that describes about reference Figure 85, when discharge as long as the high electricity accumulating unit CellP of retrieval voltage (the electricity accumulating unit CellQ that P=2～N) and voltage are low (Q=1～N, but except P) and control switch as Figure 107, Figure 108.
That is, if P〉1, as Figure 107, between charge period the first half of Tx during in Txa, come turn on-switch SdP and switch S cP+1 by not shown control circuit.In addition, during Tx later half in Txb, come turn on-switch ScQ and switch S dQ+1 by not shown control circuit between charge period.
And, if Q=1, as Figure 108, between charge period the first half of Tx during in Txa, come turn on-switch SdP and switch S cP+1 by not shown control circuit.In addition, during Tx later half in Txb, come turn on-switch Sd2 and switch Sb 2 by not shown control circuit between charge period.
About described above, with reference to the equilibrium charging circuit that Figure 85 describes, be provided with diode D1.Therefore, in the situation that P=1 can not carry out the unit balance when discharge.
In addition, the equilibrium charging circuit about reference Figure 92 describes is provided with diode D1～DN-1, therefore can not carry out the unit balance when discharge.
(balance charging method of series connection electricity accumulating unit)
In the equilibrium charging circuit of the series connection electricity accumulating unit of each above-mentioned execution mode, the balance charging method of the series connection electricity accumulating unit below having realized.namely, realize a kind of balance charging method of the electricity accumulating unit of connecting, provided electric power by the power supply that is connected with input terminal, (N is the integer more than 2 to the first～the N of being connected in series in order from the said reference voltage terminal between lead-out terminal and reference voltage terminal, electricity accumulating unit down together) carries out equilibrium charging, the balance charging method of this series connection electricity accumulating unit possesses: first step, coil is connected electrically between above-mentioned input terminal and said reference voltage terminal, will be for (charging current that the electricity accumulating unit of 1≤k≤N) charges is filled with above-mentioned coil to above-mentioned k, second step is connected electrically in above-mentioned coil at the two ends of above-mentioned k electricity accumulating unit, and the charging current that will be filled with above-mentioned coil in above-mentioned first step is filled with above-mentioned k electricity accumulating unit, and third step, repeat above-mentioned first and second step above-mentioned the first～the N electricity accumulating unit is one by one charged.By adopting the method, do not need to arrange a plurality of coils, can carry out equilibrium charging to the series connection electricity accumulating unit by a coil.
Utilizability on industry
The equilibrium charging circuit of series unit of the present invention can preferably be used in the fields such as charging system.
Description of reference numerals
101,201,301,401,501: input terminal; 102,202,302,402,502: lead-out terminal; 503: the charging control circuit; 504: the unit balancing circuitry; C1～CN-1: electric capacity; Cell1～CellN: electricity accumulating unit; Control1～Control6: control circuit; D1～DN-1: diode; L1, L2: coil; M1, M2: current monitoring circuit; S1～S6: switch.

Claims (32)

1. the equilibrium charging circuit of the electricity accumulating unit of connecting, to being connected in series and a side of the end of connecting is connected with lead-out terminal and the first electricity accumulating unit and second electricity accumulating unit of the opposing party and reference voltage terminal sub-connection carry out equilibrium charging, the equilibrium charging circuit of this series connection electricity accumulating unit is characterised in that to possess:
Coil, it is configured to be shared by above-mentioned the first electricity accumulating unit and above-mentioned the second electricity accumulating unit, for above-mentioned the first electricity accumulating unit and above-mentioned the second electricity accumulating unit are charged and the electric power that provides from power supply is provided provisionally; And
Switch portion, it is used for a side of above-mentioned the first electricity accumulating unit and above-mentioned the second electricity accumulating unit and above-mentioned coil are electrically connected to fetch charging, and afterwards the opposing party in above-mentioned the first electricity accumulating unit and above-mentioned the second electricity accumulating unit and above-mentioned coil is electrically connected to fetch and charges.
2. the equilibrium charging circuit of series connection electricity accumulating unit according to claim 1, is characterized in that,
Above-mentioned switch portion is made of a plurality of switches that the path of the charging current of the above-mentioned coil of flowing through is switched,
the equilibrium charging circuit of this series connection electricity accumulating unit also possesses control circuit, this control circuit is controlled the break-make of above-mentioned a plurality of switches, repeatedly setting will be filled with between the first charge period of above-mentioned coil for the charging current that above-mentioned the second electricity accumulating unit is charged in order, the charging current that is filled into above-mentioned coil is filled with between the second charge period of above-mentioned the second electricity accumulating unit, to be filled with between the 3rd charge period of above-mentioned coil and the charging current that will be filled into above-mentioned coil is filled with between the 4th charge period of above-mentioned the first electricity accumulating unit for the charging current that above-mentioned the first electricity accumulating unit is charged,
Above-mentioned control circuit is controlled the break-make of above-mentioned a plurality of switches, make between above-mentioned the first charge period in formation flow to the path of the charging current of said reference voltage terminal by above-mentioned coil,
Above-mentioned control circuit is controlled the break-make of above-mentioned a plurality of switches, make between above-mentioned the second charge period in formation flow to the path of the charging current of above-mentioned the second electricity accumulating unit from above-mentioned coil,
Above-mentioned control circuit is controlled the break-make of above-mentioned a plurality of switches, make between above-mentioned the 3rd charge period in formation flow to the path of the charging current of said reference voltage terminal by above-mentioned coil,
Above-mentioned control circuit is controlled the break-make of above-mentioned a plurality of switches, makes an end of above-mentioned coil and an end conducting of above-mentioned the first electricity accumulating unit, the other end of above-mentioned coil and the other end conducting of above-mentioned the first electricity accumulating unit form the path that flows to the charging current of above-mentioned the first electricity accumulating unit from above-mentioned coil in making between above-mentioned the 4th charge period.
3. the equilibrium charging circuit of series connection electricity accumulating unit according to claim 2, is characterized in that,
Above-mentioned a plurality of switch comprises:
The first switch, the one end be connected above-mentioned the first electricity accumulating unit and be connected the contact of the second electricity accumulating unit and connect;
Second switch, the one end is connected with input terminal;
The 3rd switch, the one end is connected with the said reference voltage terminal;
The 4th switch, the one end is connected with above-mentioned lead-out terminal;
The 5th switch, the one end is connected with the said reference voltage terminal; And
The 6th switch, the one end be connected above-mentioned the first electricity accumulating unit and be connected the contact of the second electricity accumulating unit and connect,
One end of above-mentioned coil is connected with the other end of the other end of the other end of above-mentioned the first switch, above-mentioned second switch, above-mentioned the 3rd switch, the other end of above-mentioned coil is connected with the other end of the other end of above-mentioned the 4th switch, above-mentioned the 5th switch, the other end of above-mentioned the 6th switch
Above-mentioned control circuit is connected above-mentioned second switch and above-mentioned the 6th switch between above-mentioned the first charge period, disconnects above-mentioned the first switch, above-mentioned the 3rd switch, above-mentioned the 4th switch and above-mentioned the 5th switch,
Above-mentioned control circuit is connected above-mentioned the 3rd switch and above-mentioned the 6th switch between above-mentioned the second charge period, disconnects above-mentioned the first switch, above-mentioned second switch, above-mentioned the 4th switch and above-mentioned the 5th switch,
Above-mentioned control circuit is connected above-mentioned second switch and above-mentioned the 5th switch between above-mentioned the 3rd charge period, disconnects above-mentioned the first switch, above-mentioned the 3rd switch, above-mentioned the 4th switch and above-mentioned the 6th switch,
Above-mentioned control circuit is connected above-mentioned the first switch and above-mentioned the 4th switch between above-mentioned the 4th charge period, disconnects above-mentioned second switch, above-mentioned the 3rd switch, above-mentioned the 5th switch and above-mentioned the 6th switch.
4. the equilibrium charging circuit of series connection electricity accumulating unit according to claim 2, is characterized in that,
Above-mentioned a plurality of switch comprises:
The first switch, the one end be connected above-mentioned the first electricity accumulating unit and be connected the contact of the second electricity accumulating unit and connect;
Second switch, the one end is connected with input terminal;
The 3rd switch, the one end is connected with the said reference voltage terminal;
The 4th switch, the one end is connected with above-mentioned lead-out terminal;
The 5th switch, the one end is connected with the said reference voltage terminal; And
The 6th switch, the one end be connected above-mentioned the first electricity accumulating unit and be connected the contact of the second electricity accumulating unit and connect,
One end of above-mentioned coil is connected with the other end of the other end of the other end of above-mentioned the first switch, above-mentioned second switch, above-mentioned the 3rd switch, the other end of above-mentioned coil is connected with the other end of the other end of above-mentioned the 4th switch, above-mentioned the 5th switch, the other end of above-mentioned the 6th switch
Above-mentioned control circuit is connected above-mentioned second switch and above-mentioned the 5th switch between above-mentioned the first charge period, disconnects above-mentioned the first switch, above-mentioned the 3rd switch, above-mentioned the 4th switch and above-mentioned the 6th switch,
Above-mentioned control circuit is connected above-mentioned the 3rd switch and above-mentioned the 6th switch between above-mentioned the second charge period, disconnects above-mentioned the first switch, above-mentioned second switch, above-mentioned the 4th switch and above-mentioned the 5th switch,
Above-mentioned control circuit is connected above-mentioned second switch and above-mentioned the 5th switch between above-mentioned the 3rd charge period, disconnects above-mentioned the first switch, above-mentioned the 3rd switch, above-mentioned the 4th switch and above-mentioned the 6th switch,
Above-mentioned control circuit is connected above-mentioned the first switch and above-mentioned the 4th switch between above-mentioned the 4th charge period, disconnects above-mentioned second switch, above-mentioned the 3rd switch, above-mentioned the 5th switch and above-mentioned the 6th switch.
5. the equilibrium charging circuit of series connection electricity accumulating unit according to claim 2, is characterized in that,
Above-mentioned a plurality of switch comprises:
The first switch, the one end is connected with above-mentioned lead-out terminal;
Second switch, the one end is connected with input terminal;
The 3rd switch, the one end is connected with the said reference voltage terminal;
The 4th switch, the one end is connected with above-mentioned input terminal; And
The 5th switch, the one end be connected above-mentioned the first electricity accumulating unit and be connected the contact of the second electricity accumulating unit and connect,
One end of above-mentioned coil is connected with the other end of the other end of the other end of above-mentioned the first switch, above-mentioned second switch, above-mentioned the 3rd switch, and the other end of above-mentioned coil is connected with the other end of above-mentioned the 4th switch, the other end of above-mentioned the 5th switch,
Above-mentioned control circuit is connected above-mentioned second switch and above-mentioned the 5th switch between above-mentioned the first charge period, disconnects above-mentioned the first switch, above-mentioned the 3rd switch and above-mentioned the 4th switch,
Above-mentioned control circuit is connected above-mentioned the 3rd switch and above-mentioned the 5th switch between above-mentioned the second charge period, disconnects above-mentioned the first switch, above-mentioned second switch and above-mentioned the 4th switch,
Above-mentioned control circuit is connected above-mentioned the 3rd switch and above-mentioned the 4th switch between above-mentioned the 3rd charge period, disconnects above-mentioned the first switch, above-mentioned second switch and above-mentioned the 5th switch,
Above-mentioned control circuit is connected above-mentioned the first switch and above-mentioned the 5th switch between above-mentioned the 4th charge period, disconnects above-mentioned second switch, above-mentioned the 3rd switch and above-mentioned the 4th switch.
6. the equilibrium charging circuit of series connection electricity accumulating unit according to claim 2, is characterized in that,
Above-mentioned a plurality of switch comprises:
The first switch, the one end is connected with above-mentioned lead-out terminal;
Second switch, the one end is connected with input terminal; And
The 3rd switch, the one end is connected with the said reference voltage terminal,
One end of above-mentioned coil is connected with the other end of the other end of the other end of above-mentioned the first switch, above-mentioned second switch, above-mentioned the 3rd switch, the other end of above-mentioned coil be connected above-mentioned the first electricity accumulating unit and be connected the contact of the second electricity accumulating unit and connect,
Above-mentioned control circuit is connected above-mentioned second switch between above-mentioned the first charge period, disconnects above-mentioned the first switch and above-mentioned the 3rd switch,
Above-mentioned control circuit is connected above-mentioned the 3rd switch between above-mentioned the second charge period, disconnects above-mentioned the first switch and above-mentioned second switch,
Above-mentioned control circuit is connected above-mentioned the 3rd switch between above-mentioned the 3rd charge period, disconnects above-mentioned the first switch and above-mentioned second switch,
Above-mentioned control circuit is connected above-mentioned the first switch between above-mentioned the 4th charge period, disconnects above-mentioned second switch and above-mentioned the 3rd switch.
7. the equilibrium charging circuit of series connection electricity accumulating unit according to claim 2, is characterized in that,
Above-mentioned a plurality of switch comprises:
The first switch, the one end is connected with above-mentioned lead-out terminal;
Second switch, the one end is connected with input terminal; And
The 3rd switch, the one end is connected with the said reference voltage terminal,
The equilibrium charging circuit of this series connection electricity accumulating unit also possesses:
Electric capacity, the one end is connected with the said reference voltage terminal; And
Diode, its negative electrode be connected above-mentioned the first electricity accumulating unit and be connected the contact of the second electricity accumulating unit and connect,
One end of above-mentioned coil is connected with the other end of the other end of the other end of above-mentioned the first switch, above-mentioned second switch, above-mentioned the 3rd switch, the anodic bonding of the other end of above-mentioned coil and the other end of above-mentioned electric capacity, above-mentioned diode,
Above-mentioned control circuit is connected above-mentioned second switch between above-mentioned the first charge period, disconnects above-mentioned the first switch and above-mentioned the 3rd switch,
Above-mentioned control circuit is connected above-mentioned the 3rd switch between above-mentioned the second charge period, disconnects above-mentioned the first switch and above-mentioned second switch,
Above-mentioned control circuit is connected above-mentioned the 3rd switch between above-mentioned the 3rd charge period, disconnects above-mentioned the first switch and above-mentioned second switch,
Connect above-mentioned the first switch between above-mentioned the 4th charge period of above-mentioned control circuit, disconnect above-mentioned second switch and above-mentioned the 3rd switch.
8. the equilibrium charging circuit of the described series connection electricity accumulating unit of any one according to claim 5～7, is characterized in that,
Above-mentioned control circuit is set between above-mentioned the second charge period and the time of the turn on-switch between above-mentioned the 4th charge period, make between above-mentioned the second charge period and when finishing between above-mentioned the 4th charge period the charging current of above-mentioned coil become zero.
9. the equilibrium charging circuit of the electricity accumulating unit of connecting, electric power is provided and the first electricity accumulating unit to the N electricity accumulating unit that is connected in series in order from the said reference voltage terminal between lead-out terminal and reference voltage terminal is carried out equilibrium charging by the power supply that is connected with input terminal, wherein, N is the integer more than 2, the equilibrium charging circuit of this series connection electricity accumulating unit is characterised in that to possess:
Coil, it is used for accumulating the electric power that provides from above-mentioned power supply above-mentioned the first electricity accumulating unit to the N electricity accumulating unit is charged;
The first switch group, it is used for above-mentioned coil is electrically connected between above-mentioned input terminal and said reference voltage terminal; And
The second switch group, it is used for above-mentioned coil is electrically connected to two the bringing in and charge separately of above-mentioned the first electricity accumulating unit to the N electricity accumulating unit,
Wherein, above-mentioned the first electricity accumulating unit to the N electricity accumulating unit is one by one charged.
10. the equilibrium charging circuit of series connection electricity accumulating unit according to claim 9, is characterized in that,
also possesses control circuit, this control circuit with the k coil charges during and be made as between the k charge period that above-mentioned k electricity accumulating unit is charged between k electricity accumulating unit charge period, come between above-mentioned the first charge period of repeatedly setting between each charge period between the N charge period, wherein, 1≤k≤N, the break-make that during this k coil charges is above-mentioned the first switch group of this control circuit control will be used for being filled with the charging current that above-mentioned k electricity accumulating unit charges the time of above-mentioned coil, being this control circuit break-make of controlling above-mentioned second switch group between this k electricity accumulating unit charge period is filled with time of above-mentioned k electricity accumulating unit with the charging current that is filled into above-mentioned coil in during above-mentioned k coil charges,
Above-mentioned control circuit is controlled the break-make of above-mentioned the first switch group, make during above-mentioned k coil charges in formation flow to the path of the charging current of said reference voltage terminal by above-mentioned coil,
Above-mentioned control circuit is controlled above-mentioned second switch group's break-make, make between above-mentioned k electricity accumulating unit charge period in formation flow to the path of the charging current of above-mentioned k electricity accumulating unit from above-mentioned coil.
11. the equilibrium charging circuit of series connection electricity accumulating unit according to claim 10 is characterized in that,
Above-mentioned the first switch group comprises:
The first coil connecting valve, the one end is connected with above-mentioned input terminal, and the other end is connected with an end of above-mentioned coil; And
The second coil connecting valve, the one end is connected with the other end of above-mentioned coil, and the other end is connected with the said reference voltage terminal,
Above-mentioned second switch group comprises:
The first electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve, the one end is connected with the downside separately of above-mentioned the first electricity accumulating unit to the N electricity accumulating unit, and the other end is connected with an end of above-mentioned coil; And
The first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve, the one end is connected with the upside separately of above-mentioned the first electricity accumulating unit to the (N-1) electricity accumulating unit, and the other end is connected with the other end of above-mentioned coil.
12. the equilibrium charging circuit of series connection electricity accumulating unit according to claim 11 is characterized in that,
Above-mentioned control circuit is connected above-mentioned the first coil connecting valve and above-mentioned the second coil connecting valve in during above-mentioned k coil charges, disconnect above-mentioned the first electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve
above-mentioned control circuit disconnects above-mentioned the first coil connecting valve and above-mentioned the second coil connecting valve between above-mentioned k electricity accumulating unit charge period, connect above-mentioned k electricity accumulating unit downside connecting valve and above-mentioned k electricity accumulating unit upside connecting valve, disconnect above-mentioned k electricity accumulating unit downside connecting valve switch and the switch in addition of the above-mentioned k electricity accumulating unit upside connecting valve in above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve in addition in above-mentioned the second electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve.
13. the equilibrium charging circuit of series connection electricity accumulating unit according to claim 11 is characterized in that,
Above-mentioned control circuit is connected above-mentioned the first coil connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve between above-mentioned the first coil charge period, disconnect above-mentioned the second coil connecting valve, above-mentioned the first electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve and above-mentioned the second electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve
Above-mentioned control circuit is connected above-mentioned the first coil connecting valve and above-mentioned the second coil connecting valve in during above-mentioned M coil charges, disconnect above-mentioned the first electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve, wherein, 2≤M≤N
above-mentioned control circuit disconnects above-mentioned the first coil connecting valve and above-mentioned the second coil connecting valve between above-mentioned the first electricity accumulating unit charge period, connect above-mentioned the first electricity accumulating unit downside connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve, disconnect above-mentioned the first electricity accumulating unit downside connecting valve switch and the switch in addition of above-mentioned the first electricity accumulating unit upside connecting valve in above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve in addition in above-mentioned the first electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve,
above-mentioned control circuit disconnects above-mentioned the first coil connecting valve and above-mentioned the second coil connecting valve between above-mentioned M electricity accumulating unit charge period, connect above-mentioned M electricity accumulating unit downside connecting valve and above-mentioned M electricity accumulating unit upside connecting valve, disconnect above-mentioned M electricity accumulating unit downside connecting valve switch and the switch in addition of the above-mentioned M electricity accumulating unit upside connecting valve in above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve in addition in above-mentioned the first electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve.
14. the equilibrium charging circuit of series connection electricity accumulating unit according to claim 11 is characterized in that,
Above-mentioned control circuit is connected above-mentioned the first coil connecting valve and above-mentioned the second coil connecting valve between above-mentioned the first coil charge period, disconnect above-mentioned the first electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve
Above-mentioned control circuit is connected above-mentioned the first coil connecting valve and above-mentioned the second coil connecting valve in during above-mentioned M coil charges, disconnect above-mentioned the first electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve
Above-mentioned control circuit is connected above-mentioned the first coil connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve between above-mentioned the first electricity accumulating unit charge period, disconnect above-mentioned the first electricity accumulating unit upside connecting valve switch in addition in above-mentioned the second coil connecting valve, above-mentioned the first electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve
above-mentioned control circuit disconnects above-mentioned the first coil connecting valve and above-mentioned the second coil connecting valve between above-mentioned M electricity accumulating unit charge period, connect above-mentioned M electricity accumulating unit downside connecting valve and above-mentioned M electricity accumulating unit upside connecting valve, disconnect above-mentioned M electricity accumulating unit downside connecting valve switch and the switch in addition of the above-mentioned M electricity accumulating unit upside connecting valve in above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve in addition in above-mentioned the first electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve.
15. the equilibrium charging circuit of series connection electricity accumulating unit according to claim 10 is characterized in that,
Above-mentioned the first switch group comprises:
The first coil connecting valve, the one end is connected with above-mentioned input terminal, and the other end is connected with an end of above-mentioned coil;
The second coil connecting valve, the one end is connected with the other end of above-mentioned coil, and the other end is connected with the said reference voltage terminal;
The tertiary coil connecting valve, the one end is connected with above-mentioned input terminal, and the other end is connected with the other end of above-mentioned coil; And
The 4th coil connecting valve, the one end is connected with an end of above-mentioned coil, and the other end is connected with the said reference voltage terminal,
Above-mentioned second switch group comprises:
K electricity accumulating unit connecting valve, the one end is connected with downside separately and the above-mentioned lead-out terminal of above-mentioned the first electricity accumulating unit to the N electricity accumulating unit, and the other end is connected with an end of above-mentioned coil, and wherein, k is even number; And
K electricity accumulating unit connecting valve, the one end is connected with the upside separately of above-mentioned the first electricity accumulating unit to the (N-1) electricity accumulating unit, and the other end is connected with the other end of above-mentioned coil, and wherein, k is odd number.
16. the equilibrium charging circuit of series connection electricity accumulating unit according to claim 15 is characterized in that,
Above-mentioned control circuit is connected above-mentioned the first coil connecting valve and above-mentioned the second coil connecting valve in during above-mentioned k coil charges, disconnect above-mentioned tertiary coil connecting valve, above-mentioned the 4th coil connecting valve and above-mentioned the first electricity accumulating unit connecting valve to the N electricity accumulating unit connecting valve, wherein, k is odd number
Above-mentioned control circuit is connected above-mentioned tertiary coil connecting valve and above-mentioned the 4th coil connecting valve in during above-mentioned k coil charges, disconnect above-mentioned the first coil connecting valve, above-mentioned the second coil connecting valve and above-mentioned the first electricity accumulating unit connecting valve to the N electricity accumulating unit connecting valve, wherein, k is even number
Above-mentioned control circuit is connected above-mentioned the 4th coil connecting valve and above-mentioned the first electricity accumulating unit connecting valve between above-mentioned the first electricity accumulating unit charge period, disconnect above-mentioned the first coil connecting valve to tertiary coil connecting valve and above-mentioned the second electricity accumulating unit connecting valve to the N electricity accumulating unit connecting valve
Above-mentioned control circuit is connected above-mentioned k electricity accumulating unit connecting valve and above-mentioned (k-1) electricity accumulating unit connecting valve between above-mentioned k electricity accumulating unit charge period, disconnect above-mentioned the first coil connecting valve to above-mentioned the 4th coil connecting valve, disconnect above-mentioned k electricity accumulating unit connecting valve and (k-1) electricity accumulating unit connecting valve switch in addition in above-mentioned the first electricity accumulating unit connecting valve to the N electricity accumulating unit connecting valve, wherein, k 〉=2.
17. the equilibrium charging circuit of series connection electricity accumulating unit according to claim 16 is characterized in that,
Above-mentioned control circuit between above-mentioned the first coil charge period in, replace to connect above-mentioned the second coil connecting valve and connect above-mentioned the first electricity accumulating unit connecting valve.
18. the equilibrium charging circuit of series connection electricity accumulating unit according to claim 16 is characterized in that,
Above-mentioned control circuit between above-mentioned the first electricity accumulating unit charge period in, replace to connect above-mentioned the 4th coil connecting valve and connect above-mentioned the first coil connecting valve.
19. the equilibrium charging circuit of series connection electricity accumulating unit according to claim 10 is characterized in that,
Above-mentioned the first switch group comprises:
The first coil connecting valve, the one end is connected with above-mentioned input terminal, and the other end is connected with an end of above-mentioned coil;
The second coil connecting valve, the one end is connected with above-mentioned input terminal, and the other end is connected with the other end of above-mentioned coil; And
The tertiary coil connecting valve, the one end is connected with an end of above-mentioned coil, and the other end is connected with the said reference voltage terminal,
Above-mentioned second switch group comprises:
The first electricity accumulating unit downside connecting valve to the (N-1) electricity accumulating unit downside connecting valve, the one end is connected with downside separately and the above-mentioned lead-out terminal of above-mentioned the 3rd electricity accumulating unit to the N electricity accumulating unit, and the other end is connected with an end of above-mentioned coil; And
The first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve, the one end is connected with the upside separately of above-mentioned the first electricity accumulating unit to the (N-1) electricity accumulating unit, and the other end is connected with the other end of above-mentioned coil.
20. the equilibrium charging circuit of series connection electricity accumulating unit according to claim 19 is characterized in that,
Above-mentioned control circuit is connected above-mentioned the first coil connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve between above-mentioned the first coil charge period,
Above-mentioned control circuit is connected above-mentioned the second coil connecting valve and above-mentioned tertiary coil connecting valve in during the N coil charges during above-mentioned the second coil charges, disconnect above-mentioned the first electricity accumulating unit downside connecting valve to the (N-1) electricity accumulating unit downside connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve
Above-mentioned control circuit is connected above-mentioned tertiary coil connecting valve between above-mentioned the first electricity accumulating unit charge period, connect above-mentioned the first electricity accumulating unit upside connecting valve, disconnect above-mentioned the first electricity accumulating unit upside connecting valve switch in addition in above-mentioned the first electricity accumulating unit downside connecting valve to the (N-1) electricity accumulating unit downside connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve
above-mentioned control circuit disconnects above-mentioned the first coil connecting valve to above-mentioned tertiary coil connecting valve between above-mentioned k electricity accumulating unit charge period, connect above-mentioned (k+1) electricity accumulating unit downside connecting valve and above-mentioned k electricity accumulating unit upside connecting valve, disconnect above-mentioned (k+1) electricity accumulating unit downside connecting valve switch and the switch in addition of the above-mentioned k electricity accumulating unit upside connecting valve in above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve in addition in above-mentioned the first electricity accumulating unit downside connecting valve to the (N-1) electricity accumulating unit downside connecting valve, wherein, k 〉=2.
21. the equilibrium charging circuit of series connection electricity accumulating unit according to claim 10 is characterized in that,
Above-mentioned the first switch group comprises:
The first coil connecting valve, the one end is connected with above-mentioned input terminal, and the other end is connected with an end of above-mentioned coil; And
The second coil connecting valve, the one end is connected with an end of above-mentioned coil, and the other end is connected with the said reference voltage terminal,
Above-mentioned second switch group comprises:
The first electricity accumulating unit downside connecting valve to the (N-1) electricity accumulating unit downside connecting valve, the one end is connected with downside separately and the above-mentioned lead-out terminal of above-mentioned the 3rd electricity accumulating unit to the N electricity accumulating unit, and the other end is connected with an end of above-mentioned coil; And
The first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve, the one end is connected with the upside separately of above-mentioned the first electricity accumulating unit to the (N-1) electricity accumulating unit, and the other end is connected with the other end of above-mentioned coil.
22. the equilibrium charging circuit of series connection electricity accumulating unit according to claim 21 is characterized in that,
Above-mentioned control circuit is connected above-mentioned the first coil connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve between above-mentioned the first coil charge period,
Above-mentioned control circuit is connected above-mentioned the second coil connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve in during the N coil charges during above-mentioned the second coil charges, disconnect above-mentioned the first electricity accumulating unit downside connecting valve to the (N-1) electricity accumulating unit downside connecting valve and above-mentioned the second electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve
Above-mentioned control circuit is connected above-mentioned the second coil connecting valve between above-mentioned the first electricity accumulating unit charge period, connect above-mentioned the first electricity accumulating unit upside connecting valve, disconnect above-mentioned the first electricity accumulating unit downside connecting valve to the (N-1) electricity accumulating unit downside connecting valve and above-mentioned the second electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve
above-mentioned control circuit disconnects above-mentioned the first coil connecting valve and above-mentioned the second coil connecting valve between above-mentioned k electricity accumulating unit charge period, connect above-mentioned (k+1) electricity accumulating unit downside connecting valve and above-mentioned k electricity accumulating unit upside connecting valve, disconnect above-mentioned (k+1) electricity accumulating unit downside connecting valve switch and the switch in addition of the above-mentioned k electricity accumulating unit upside connecting valve in above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve in addition in above-mentioned the first electricity accumulating unit downside connecting valve to the (N-1) electricity accumulating unit downside connecting valve, wherein, k 〉=2.
23. the equilibrium charging circuit of series connection electricity accumulating unit according to claim 22 is characterized in that,
Above-mentioned control circuit is connected above-mentioned the second coil connecting valve and above-mentioned (k-1) electricity accumulating unit upside connecting valve in during above-mentioned k coil charges, disconnect above-mentioned (k-1) electricity accumulating unit upside connecting valve switch in addition in above-mentioned the first electricity accumulating unit downside connecting valve to the (N-1) electricity accumulating unit downside connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve, wherein, 2≤k≤N.
24. the equilibrium charging circuit of series connection electricity accumulating unit according to claim 10 is characterized in that,
Above-mentioned the first switch group comprises:
The first coil connecting valve, the one end is connected with above-mentioned input terminal, and the other end is connected with an end of above-mentioned coil; And
The second coil connecting valve, the one end is connected with an end of above-mentioned coil, and the other end is connected with the said reference voltage terminal,
Above-mentioned second switch group comprises:
The first electricity accumulating unit downside connecting valve to the (N-1) electricity accumulating unit downside connecting valve, the one end is connected with downside separately and the above-mentioned lead-out terminal of above-mentioned the 3rd electricity accumulating unit to the N electricity accumulating unit, and the other end is connected with an end of above-mentioned coil; And
The first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve, the one end is connected with the upside separately of above-mentioned the first electricity accumulating unit to the (N-1) electricity accumulating unit, and the other end is connected with the other end of above-mentioned coil,
The equilibrium charging circuit of this series connection electricity accumulating unit also possesses:
Diode, its negative electrode are connected with the upside of above-mentioned the first electricity accumulating unit and anode is connected with above-mentioned the first electricity accumulating unit upside connecting valve; And
Electric capacity, it is connected between the anode and said reference voltage terminal of above-mentioned diode.
25. the equilibrium charging circuit of series connection electricity accumulating unit according to claim 10 is characterized in that,
Above-mentioned the first switch group comprises:
The first coil connecting valve, the one end is connected with above-mentioned input terminal, and the other end is connected with an end of above-mentioned coil;
The second coil connecting valve, the one end is connected with an end of above-mentioned coil, and the other end is connected with the said reference voltage terminal,
Above-mentioned second switch group comprises:
The first electricity accumulating unit downside connecting valve to the (N-1) electricity accumulating unit downside connecting valve, the one end is connected with downside separately and the above-mentioned lead-out terminal of above-mentioned the 3rd electricity accumulating unit to the N electricity accumulating unit, and the other end is connected with an end of above-mentioned coil; And
The first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve, the one end is connected with the upside separately of above-mentioned the first electricity accumulating unit to the (N-1) electricity accumulating unit, and the other end is connected with the other end of above-mentioned coil,
The equilibrium charging circuit of this series connection electricity accumulating unit also possesses:
The first diode to the (N-1) diode, itself and above-mentioned the first electricity accumulating unit to the (N-1) electricity accumulating unit arrange respectively accordingly, and negative electrode is connected with each connecting valve of above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve with upside connection separately and the anode of corresponding electricity accumulating unit;
The first electric capacity, it is connected between the anode and said reference voltage terminal of above-mentioned the first diode; And
The second electric capacity to the (N-1) electric capacity, itself and above-mentioned the second diode to the (N-1) diode arrange respectively accordingly, are connected between the anode of diode of the anode of corresponding diode and this diode downside.
26. according to claim 24 or the equilibrium charging circuit of 25 described series connection electricity accumulating units, it is characterized in that,
Above-mentioned control circuit is connected above-mentioned the first coil connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve between above-mentioned the first coil charge period,
Above-mentioned control circuit is connected above-mentioned the second coil connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve in during the N coil charges during above-mentioned the second coil charges, disconnect above-mentioned the first electricity accumulating unit downside connecting valve to the (N-1) electricity accumulating unit downside connecting valve and above-mentioned the second electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve
Above-mentioned control circuit is connected above-mentioned the second coil connecting valve between above-mentioned the first electricity accumulating unit charge period, connect above-mentioned the first electricity accumulating unit upside connecting valve, disconnect above-mentioned the first electricity accumulating unit downside connecting valve to the (N-1) electricity accumulating unit downside connecting valve and above-mentioned the second electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve
above-mentioned control circuit disconnects above-mentioned the first coil connecting valve and above-mentioned the second coil connecting valve between above-mentioned k electricity accumulating unit charge period, connect above-mentioned (k-1) electricity accumulating unit downside connecting valve and above-mentioned (k-1) electricity accumulating unit upside connecting valve, disconnect above-mentioned (k-1) electricity accumulating unit downside connecting valve switch and the switch in addition of above-mentioned (k-1) electricity accumulating unit upside connecting valve in above-mentioned the first electricity accumulating unit upside connecting valve to the (N-1) electricity accumulating unit upside connecting valve in addition in above-mentioned the first electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve, wherein, k 〉=2.
27. the equilibrium charging circuit of series connection electricity accumulating unit according to claim 10 is characterized in that,
Above-mentioned the first switch group comprises:
The first coil connecting valve, the one end is connected with above-mentioned input terminal, and the other end is connected with an end of above-mentioned coil; And
The second coil connecting valve, the one end is connected with the other end of above-mentioned coil, and the other end is connected with the said reference voltage terminal,
Above-mentioned second switch group comprises:
The first electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve, the one end is connected with the downside separately of above-mentioned the first electricity accumulating unit to the N electricity accumulating unit, and the other end is connected with an end of above-mentioned coil; And
The first electricity accumulating unit upside connecting valve to the N electricity accumulating unit upside connecting valve, the one end is connected with the upside separately of above-mentioned the first electricity accumulating unit to the N electricity accumulating unit, and the other end is connected with the other end of above-mentioned coil.
28. the equilibrium charging circuit of series connection electricity accumulating unit according to claim 27 is characterized in that,
Above-mentioned control circuit is connected above-mentioned the first coil connecting valve and above-mentioned the second coil connecting valve in during the N coil charges between above-mentioned the first coil charge period, disconnect above-mentioned the first electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve and above-mentioned the first electricity accumulating unit upside connecting valve to the N electricity accumulating unit upside connecting valve
Above-mentioned control circuit is connected above-mentioned k electricity accumulating unit downside connecting valve and above-mentioned k electricity accumulating unit upside connecting valve between above-mentioned k electricity accumulating unit charge period, disconnect above-mentioned k electricity accumulating unit downside connecting valve switch and the switch in addition of the above-mentioned k electricity accumulating unit upside connecting valve in above-mentioned the first electricity accumulating unit upside connecting valve to the N electricity accumulating unit upside connecting valve in addition in above-mentioned the first electricity accumulating unit downside connecting valve to the N electricity accumulating unit downside connecting valve, wherein, 1≤k≤N.
29. the equilibrium charging circuit of series connection electricity accumulating unit according to claim 16 is characterized in that,
Above-mentioned control circuit and above-mentioned k coil charges during and after between above-mentioned k electricity accumulating unit charge period, suitable action is all completed, wherein, k is odd number,
The break-make of controlling above-mentioned the first switch group and above-mentioned second switch group make carry out and above-mentioned k coil charges during and suitable action between above-mentioned k electricity accumulating unit charge period, wherein, k is even number.
30. the equilibrium charging circuit of series connection electricity accumulating unit according to claim 16 is characterized in that,
Above-mentioned control circuit and above-mentioned k coil charges during and after between above-mentioned k electricity accumulating unit charge period, suitable action is all completed, wherein, k is even number,
The break-make of controlling above-mentioned the first switch group and above-mentioned second switch group make carry out and above-mentioned k coil charges during and suitable action between above-mentioned k electricity accumulating unit charge period, wherein, k is odd number.
31. the equilibrium charging circuit of the described series connection electricity accumulating unit of any one according to claim 9～30 is characterized in that,
above-mentioned control circuit is for above-mentioned the first electricity accumulating unit to the N electricity accumulating unit, controlling above-mentioned the first switch group and above-mentioned second switch group makes the two ends of the above-mentioned P electricity accumulating unit that voltage is high and above-mentioned coil be electrically connected and fetches and accumulate electric current from above-mentioned P electricity accumulating unit to above-mentioned coil, the two ends of the above-mentioned Q electricity accumulating unit that voltage is low and the above-mentioned coil electric current that fetches being accumulated in above-mentioned coil that is electrically connected is accumulated above-mentioned Q electricity accumulating unit afterwards, keep thus the balance of the charging voltage of above-mentioned P electricity accumulating unit and above-mentioned Q electricity accumulating unit, wherein, P is any in 1～N, Q is any except P in 1～N.
32. the balance charging method of the electricity accumulating unit of connecting, provide electric power by the power supply that is connected to input terminal, the first electricity accumulating unit to the N electricity accumulating unit that is connected in series in order from the said reference voltage terminal between lead-out terminal and reference voltage terminal is carried out equilibrium charging, wherein, N is the integer more than 2, the balance charging method of this series connection electricity accumulating unit is characterised in that, comprising:
First step, it is connected electrically in coil between above-mentioned input terminal and said reference voltage terminal, will be filled with above-mentioned coil for the charging current of charging to above-mentioned k electricity accumulating unit, wherein, 1≤k≤N;
Second step, it is electrically connected to above-mentioned coil with the two ends of above-mentioned k electricity accumulating unit, and the charging current that will be filled into above-mentioned coil in above-mentioned first step is filled with above-mentioned k electricity accumulating unit; And
Third step, it repeats above-mentioned first step and above-mentioned second step charges seriatim to above-mentioned the first electricity accumulating unit to the N electricity accumulating unit.
CN201280003175.7A 2011-03-18 2012-03-16 The equilibrium charging circuit of series connection electricity accumulating unit, the balance charging method of series connection electricity accumulating unit Active CN103155346B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2011-061299 2011-03-18
JP2011061299 2011-03-18
PCT/JP2012/001842 WO2012127830A1 (en) 2011-03-18 2012-03-16 Circuit for balance-charging serial storage cells and method for balance-charging serial storage cells

Publications (2)

Publication Number Publication Date
CN103155346A true CN103155346A (en) 2013-06-12
CN103155346B CN103155346B (en) 2015-11-25

Family

ID=46879010

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201280003175.7A Active CN103155346B (en) 2011-03-18 2012-03-16 The equilibrium charging circuit of series connection electricity accumulating unit, the balance charging method of series connection electricity accumulating unit

Country Status (7)

Country Link
US (1) US9385553B2 (en)
EP (1) EP2610998A4 (en)
JP (1) JP5576556B2 (en)
KR (2) KR101478494B1 (en)
CN (1) CN103155346B (en)
TW (1) TWI499161B (en)
WO (1) WO2012127830A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105826958A (en) * 2015-01-09 2016-08-03 比亚迪股份有限公司 Balancing device for battery protection system and battery protection system
CN106030969A (en) * 2014-02-28 2016-10-12 株式会社理光 Method of controlling a switch circuit, storage status adjusting circuit, storage status adjusting device and storage battery pack
CN107621865A (en) * 2017-09-20 2018-01-23 北京比特大陆科技有限公司 Series-fed circuit and its powering method, dig ore deposit machine, server, equipment
CN108292847A (en) * 2015-08-12 2018-07-17 牛津大学科技创新有限公司 Intelligent cell and control method and system

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8212541B2 (en) * 2008-05-08 2012-07-03 Massachusetts Institute Of Technology Power converter with capacitive energy transfer and fast dynamic response
US10389235B2 (en) 2011-05-05 2019-08-20 Psemi Corporation Power converter
US9385553B2 (en) * 2011-03-18 2016-07-05 Asahi Kasei Microdevices Corporation Balance charging circuit for series-connected storage cells and balance charging method for series-connected storage cells
US9882471B2 (en) 2011-05-05 2018-01-30 Peregrine Semiconductor Corporation DC-DC converter with modular stages
WO2013057820A1 (en) * 2011-10-20 2013-04-25 日立ビークルエナジー株式会社 Battery system monitoring device and charge storage device equipped with same
JP5880105B2 (en) * 2012-02-14 2016-03-08 ミツミ電機株式会社 Charging circuit
US8619445B1 (en) 2013-03-15 2013-12-31 Arctic Sand Technologies, Inc. Protection of switched capacitor power converter
TWI473385B (en) * 2013-04-24 2015-02-11 Metal Ind Res & Dev Ct Charging device with charging balancing and charging method thereof
JP6340736B2 (en) 2013-08-29 2018-06-13 パナソニックＩｐマネジメント株式会社 Battery controller
US9755672B2 (en) * 2013-09-24 2017-09-05 Eta Devices, Inc. Integrated power supply and modulator for radio frequency power amplifiers
US10840805B2 (en) 2013-09-24 2020-11-17 Eta Devices, Inc. Integrated power supply and modulator for radio frequency power amplifiers
WO2015129922A1 (en) * 2014-02-28 2015-09-03 Ricoh Company, Ltd. Method of controlling a switch circuit, storage status adjusting circuit, storage status adjusting device and storage battery pack
US9748785B2 (en) * 2014-03-04 2017-08-29 Ricoh Company, Ltd. Storage status adjusting circuit, storage status adjusting device, storage battery pack and switch circuit controlling method
KR101686018B1 (en) * 2015-06-17 2016-12-28 포항공과대학교 산학협력단 Battery cell balancing circuit using transformer
JP6883396B2 (en) * 2016-08-25 2021-06-09 矢崎総業株式会社 Quick charging device
GB201701751D0 (en) * 2017-02-02 2017-03-22 Univ Oxford Innovation Ltd Smart cells and control methods and systems
DE112018002809T5 (en) * 2017-06-01 2020-03-05 Mitsubishi Electric Corporation POWER SUPPLY
US10444295B2 (en) * 2017-12-20 2019-10-15 National Chung Shan Institute Of Science And Technology Battery balance management circuit
US11876394B2 (en) 2017-12-21 2024-01-16 Eric Paul Grasshoff Active cell balancing in batteries using switch mode dividers
US10910847B2 (en) 2017-12-21 2021-02-02 Eric Paul Grasshoff Active cell balancing in batteries using switch mode dividers
US20200395774A1 (en) * 2019-06-17 2020-12-17 Renesas Electronics America Inc. Single inductor multiple output charger for multiple battery applications
US11637531B1 (en) 2019-09-05 2023-04-25 Murata Manufacturing Co., Ltd. Supply generator and associated control methods
US11342776B2 (en) 2020-06-15 2022-05-24 Magnetic Energy Charging, Inc. Battery charger and method for charging a battery
KR102476007B1 (en) * 2020-11-06 2022-12-08 인하대학교 산학협력단 On Board Charger And Method Of Driving The Same
US20220224124A1 (en) * 2021-01-13 2022-07-14 Renesas Electronics America Inc. Bi-directional active battery cell balancer and method for bi-directional cell balancing

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001185229A (en) * 1999-12-28 2001-07-06 Fdk Corp Balance correction method and device for secondary batteries connected in series
US20080231231A1 (en) * 2007-03-20 2008-09-25 Enerdel, Inc. System and method for balancing state of charge of series connected cells
JP2009284591A (en) * 2008-05-20 2009-12-03 Honda Motor Co Ltd Charge controller for battery pack

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3554057B2 (en) * 1995-02-06 2004-08-11 本田技研工業株式会社 Battery charging control device for electric vehicles
FR2776139B1 (en) * 1998-03-13 2002-03-08 Denso Corp DEVICE FOR BALANCING VOLTAGES IN A COMPOSITE BATTERY
JP2003153460A (en) * 2001-11-12 2003-05-23 Japan Storage Battery Co Ltd Charging/discharging controller of storage battery
US6983212B2 (en) * 2001-11-27 2006-01-03 American Power Conversion Corporation Battery management system and method
US6844703B2 (en) * 2002-08-14 2005-01-18 The Boeing Company Battery cell balancing system
US7245108B2 (en) 2002-11-25 2007-07-17 Tiax Llc System and method for balancing state of charge among series-connected electrical energy storage units
JP4140585B2 (en) 2004-08-27 2008-08-27 Ｆｄｋ株式会社 Balance correction device for secondary batteries connected in series and correction method thereof
US8692515B2 (en) 2006-06-22 2014-04-08 Fdk Corporation Series-connected rechargeable cells, series-connected rechargeable cell device, voltage-balance correcting circuit for series-connected cells
JP4621635B2 (en) * 2006-07-05 2011-01-26 Ｆｄｋ株式会社 Series cell voltage balance correction circuit
US20080023123A1 (en) 2006-07-31 2008-01-31 Schlumberger Technology Corporation Automatic elastomer extrusion apparatus and method
US7466104B2 (en) * 2006-10-13 2008-12-16 O2 Micro International Limited System and method for balancing cells in a battery pack with selective bypass paths
JP4847891B2 (en) 2007-02-20 2011-12-28 ソニー・エリクソン・モバイルコミュニケーションズ株式会社 Portable electronic devices
GB2451138A (en) * 2007-07-20 2009-01-21 Frazer Nash Technology Ltd Battery cell charge balancing system
JP5140470B2 (en) 2008-03-25 2013-02-06 Ｆｄｋ株式会社 Series cell voltage balance correction circuit
US8288992B2 (en) * 2009-01-14 2012-10-16 Indy Power Systems, Llc Cell management system
US8493028B2 (en) * 2009-04-03 2013-07-23 Marvell World Trade Ltd. Power management circuit for rechargeable battery stack
US8330420B2 (en) * 2009-04-10 2012-12-11 The Regents Of The University Of Michigan Dynamically reconfigurable framework for a large-scale battery system
JP5440918B2 (en) * 2009-09-02 2014-03-12 独立行政法人 宇宙航空研究開発機構 Power storage device with balance circuit
JP5533010B2 (en) 2010-02-22 2014-06-25 株式会社デンソー Battery voltage monitoring device
US9385553B2 (en) * 2011-03-18 2016-07-05 Asahi Kasei Microdevices Corporation Balance charging circuit for series-connected storage cells and balance charging method for series-connected storage cells

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001185229A (en) * 1999-12-28 2001-07-06 Fdk Corp Balance correction method and device for secondary batteries connected in series
US20080231231A1 (en) * 2007-03-20 2008-09-25 Enerdel, Inc. System and method for balancing state of charge of series connected cells
JP2009284591A (en) * 2008-05-20 2009-12-03 Honda Motor Co Ltd Charge controller for battery pack

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106030969A (en) * 2014-02-28 2016-10-12 株式会社理光 Method of controlling a switch circuit, storage status adjusting circuit, storage status adjusting device and storage battery pack
CN106030969B (en) * 2014-02-28 2018-10-12 株式会社理光 Control method, electric power storage status adjustment circuit, electric power storage status adjustment device and the accumulator group of switching circuit
CN105826958A (en) * 2015-01-09 2016-08-03 比亚迪股份有限公司 Balancing device for battery protection system and battery protection system
CN108292847A (en) * 2015-08-12 2018-07-17 牛津大学科技创新有限公司 Intelligent cell and control method and system
US10910859B2 (en) 2015-08-12 2021-02-02 Oxford University Innovation Ltd Smart cells and control methods and systems
CN108292847B (en) * 2015-08-12 2023-09-26 牛津大学科技创新有限公司 Intelligent unit and control method and system
CN107621865A (en) * 2017-09-20 2018-01-23 北京比特大陆科技有限公司 Series-fed circuit and its powering method, dig ore deposit machine, server, equipment
CN107621865B (en) * 2017-09-20 2020-12-11 北京比特大陆科技有限公司 Series power supply circuit and electrifying method, mining machine, server and equipment thereof

Also Published As

Publication number Publication date
WO2012127830A1 (en) 2012-09-27
EP2610998A1 (en) 2013-07-03
EP2610998A4 (en) 2015-07-29
JPWO2012127830A1 (en) 2014-07-24
KR101453229B1 (en) 2014-10-22
KR20130055669A (en) 2013-05-28
TW201251265A (en) 2012-12-16
KR101478494B1 (en) 2014-12-31
US9385553B2 (en) 2016-07-05
CN103155346B (en) 2015-11-25
US20130187612A1 (en) 2013-07-25
TWI499161B (en) 2015-09-01
JP5576556B2 (en) 2014-08-20
KR20140062187A (en) 2014-05-22

Similar Documents

Publication Publication Date Title
CN103155346B (en) The equilibrium charging circuit of series connection electricity accumulating unit, the balance charging method of series connection electricity accumulating unit
KR101785734B1 (en) Mosfet circuit comprising a switch of switching-type cell voltage balancing circuit having series-parallel circuit, and driving circuit thereof
CN101438479B (en) Power supply system
CN101714815B (en) Boost type converter for realizing high-gain voltage multiplication by coupling inductors
CN102064707B (en) Input parallel and output parallel combination converter under control of common phase-shifting angle
CN103444068B (en) There is the modularity multiple convertor of the power semiconductor switch of energy reverse-conducting
CN102263427B (en) Energy storage device
KR102507050B1 (en) Power conversion structure and method, electronic device including power conversion structure, and chip unit
US20120212182A1 (en) Battery system with balance function
CN104334393B (en) Battery system, motor vehicle and the method for debugging battery system
CN101449451B (en) A charge pump controller and a method thereof
CN102082512A (en) Driver for piezoelectric actuator
CN101212176A (en) Booster circuit
JP6065782B2 (en) Power storage device, charging method and discharging method
CN104160464B (en) For the method unidirectional current network segment accessed by DC voltage switch
CN206379755U (en) A kind of energy-storage battery group balancer
CN102403906A (en) Boost converter
JP2013192371A (en) Power storage device, charging method, and discharging method
CN102332755A (en) Energy recycling circuit capable of driving capacitive load at low voltage and driving method for energy recycling circuit
CN102751854B (en) Circuit of switching elements
CN202617001U (en) Voltage-reducing type switching power supply and control circuit thereof
CN105871022A (en) Active equalization circuit and method for battery packs
CN102340237B (en) Driving circuit
CN203206120U (en) Voltage-reduction converting circuit and charger
US20220286051A1 (en) Hybrid Buck-Boost Power Converter

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant